英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:

periodical    音标拼音: [p,ɪri'ɑdɪkəl]
n. 期刊
a. 周期的,定期的

期刊周期的,定期的

periodical
周期

periodical
adj 1: happening or recurring at regular intervals; "the
periodic appearance of the seventeen-year locust" [synonym:
{periodic}, {periodical}] [ant: {aperiodic},
{nonperiodic}]
n 1: a publication that appears at fixed intervals

Periodic \Pe`ri*od"ic\ (p[=e]`r[i^]*[o^]d"[i^]k), Periodical
\Pe`ri*od"ic*al\ (p[=e]`r[i^]*[o^]d"[i^]*kal), a. [L.
periodicus, Gr. periodiko`s: cf. F. p['e]riodique.]
1. Of or pertaining to a period or periods, or to division by
periods.
[1913 Webster]

The periodical times of all the satellites. --Sir J.
Herschel.
[1913 Webster]

2. Performed in a period, or regular revolution; proceeding
in a series of successive circuits; as, the periodical
motion of the planets round the sun.
[1913 Webster]

3. Happening, by revolution, at a stated time; returning
regularly, after a certain period of time.
[1913 Webster]

The periodic return of a plant's flowering.
--Henslow.
[1913 Webster]

To influence opinion through the periodical press.
--Courthope.
[1913 Webster]

4. Acting, happening, or appearing, at fixed or somewhat
variable intervals; recurring; as, periodical epidemics
[1913 Webster]

5. (Rhet.) Of or pertaining to a period; constituting a
complete sentence.
[1913 Webster]

{Periodic comet} (Astron.), a comet that moves about the sun
in an elliptic orbit; a comet that has been seen at two of
its approaches to the sun.

{Periodic function} (Math.), a function whose values recur at
fixed intervals as the variable uniformly increases. The
trigonomertic functions, as sin(x), tan(x), etc., are
periodic functions. Exponential functions are also
periodic, having an imaginary period, and the elliptic
functions have not only a real but an imaginary period,
and are hence called doubly periodic.

{Periodic law} (Chem.), the generalization that the
properties of the chemical elements are periodic functions
of their atomic weights. "In other words, if the elements
are grouped in the order of their atomic weights, it will
be found that nearly the same properties recur
periodically throughout the entire series." The following
tabular arrangement of the atomic weights shows the
regular recurrence of groups (under I., II., III., IV.,
etc.), each consisting of members of the same natural
family. The gaps in the table indicate the probable
existence of unknown elements.

{Periodic table}, {Periodic table of the elements} (Chem.), A
tabular arrangement of the chemical elements, illustrating
the {periodic law}, described above.
[1913 Webster]

Note: Note: A modern version of the periodic table can be
found at: http://pearl1.lanl.gov/periodic/default.htm
[PJC] TABLE OF THE PERIODIC LAW OF THE CHEMICAL
ELEMENTS (The vertical columns contain the periodic
groups) Series1[ 2[ 3[ 4[ 5[ 6[ 7[ 8[ 9[ 10[ 11[ 12[
--------------------------------------------------------------
|I. II. III. IV. V. VI. VII. VIII. | RH4 RH3 RH3 RH
|R2O RO R3O3 RO2 R2O5 RO3 R2O7 RO4
--------------------------------------------------------------
H
1
Li
7
Na
23
K
39
(Cu)
63
Rb
85.2
(Ag)
(108)
Cs
133
(-)
(-)
(Au)
(197)

---------------------------------------------------------------
[1913 Webster]

Note: A similar relation had been enunciated in a crude way
by Newlands; but the law in its effective form was
developed and elaborated by Mendelejeff, whence it is
sometimes called {Mendelejeff's law}. Important
extensions of it were also made by L. Meyer. By this
means Mendelejeff predicted with remarkable accuracy
the hypothetical elements ekaboron, ekaluminium, and
ekasilicon, afterwards discovered and named
respectively scandium, gallium, and germanium.
[1913 Webster]

{Periodic star} (Astron.), a variable star whose changes of
brightness recur at fixed periods.

{Periodic time of a heavenly body} (Astron.), the time of a
complete revolution of the body about the sun, or of a
satellite about its primary.
[1913 Webster]


Periodical \Pe`ri*od"ic*al\, n.
A magazine or other publication which appears at stated or
regular intervals.
[1913 Webster]

55 Moby Thesaurus words for "periodical":
airing, almanac, alternate, annual, bandying, bimonthly, biweekly,
book, broadcast, broadcasting, bruiting, bruiting about,
circulation, daily, daybook, diary, diffusion, display,
dissemination, ephemeris, evulgation, fortnightly, gazette,
hebdomadal, isochronal, issuance, issue, journal, magazine,
monthly, newsletter, newsmagazine, newspaper, organ, paper,
pictorial, printing, promulgation, propagation, publication,
publishing, quarterly, recurring, renew, review, serial,
slick magazine, spread, spreading, spreading abroad, telecasting,
trade magazine, ventilation, weekly, yearbook


请选择你想看的字典辞典:
单词字典翻译
Periodical查看 Periodical 在百度字典中的解释百度英翻中〔查看〕
Periodical查看 Periodical 在Google字典中的解释Google英翻中〔查看〕
Periodical查看 Periodical 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Change Display Orientation in Windows 11
    This tutorial will show you how to change the display orientation in Windows 11 You can change the display orientation in Windows to landscape, portrait, landscape (flipped), or portrait (flipped) Tablet and 2-in-1 type devices are designed to automatically rotate the built-in display to a
  • Turn On or Off Screen Rotation Lock in Windows 11
    This tutorial will show you how to turn on or off screen rotation lock in Windows 11 A tablet and some hybrid laptop (ex: 2-in-1) devices are designed to rotate the built-in display automatically in a portrait or landscape orientation as you turn it so that what you see on the screen is always right side up
  • My Laptop Screen Keeps Flipping - Windows 11 Forum
    Turn On or Off Screen Rotation Lock in Windows 11 This tutorial will show you how to turn on or off screen rotation lock in Windows 11 A tablet and some hybrid laptop (ex: 2-in-1) devices are designed to rotate the built-in display automatically in a portrait or landscape orientation as you turn it so that what you see on the screen is always
  • How to enable orientation screen shortcuts? - Windows 11 Forum
    Windows 10 Screen Rotate Shortcut - How to get Intel graphics drivers HotKey - Microsoft Q A On daily basis, I often need to rotate screen orientation and to use Display Setting very cumbersome Is there a shortcut? that operates same as button on a smartphone to change orientation? As per following link, Display that use Intel chips should have…
  • Desktop goes into portrait orientation after windows 11 comes out of . . .
    I have recently installed a new NVME SSD and a fresh install of Windows 11 Pro Due to inactivity my computer is set to go into sleep mode When coming out of sleep mode the desktop is randomly in the portrait orientation rather than the landscape orientation it is set to This is a pain to
  • enable tablet mode when connected to external monitor - Windows 11 Forum
    Automatic Activation: Tablet mode in Windows 11 is automatically enabled when the device detects that the keyboard is detached or when the device is converted into a tablet form factor For example, if you have a 2-in-1 device, tablet mode will activate when you flip the screen to a tablet orientation 4
  • Change Mouse Scrolling Direction in Windows 11
    This tutorial will show you how to change the scrolling direction of the mouse scroll wheel for your account or all users in Windows 10 and Windows 11 Windows uses reverse scrolling by default, but you can use natural scrolling if wanted Reverse scrolling = When you roll the mouse scroll
  • Switch to Horizontal or Vertical Split Screen View . . . - Windows 11 Forum
    This tutorial will show you how to switch between a horizontal and vertical split screen view for a tab in Microsoft Edge for your account in Windows 10 and Windows 11 Split screen view in Microsoft Edge allows you to simultaneously work on multiple tasks across two, side-by-side screens in
  • Tutorials | Windows 11 Forum
    Users can change their lock screen background to Windows Spotlight, a picture, or a slideshow by default When you select to use picture or slideshow as your lock screen background, you can select to Get fun facts, tips, tricks, and more on your lock screen
  • Change Size of Desktop Icons in Windows 11
    Learn how to customize the default desktop icons in Windows, adjust their size to suit your preferences, and show or hide all icons as needed





中文字典-英文字典  2005-2009