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：

ratchet    音标拼音: [rættʃət] [r'ætʃət]
n. 制轮装置;[防倒转的] 棘齿

制轮装置;[防倒转的] 棘齿

ratchet
棘轮

ratchet
n 1: mechanical device consisting of a toothed wheel or rack
engaged with a pawl that permits it to move in only one
direction [synonym: {ratchet}, {rachet}, {ratch}]
v 1: move by degrees in one direction only; "a ratcheting
lopping tool" [synonym: {ratchet}, {rachet up}, {ratchet down}]

Ratchet \Ratch"et\ (-[e^]t), n. [Properly a diminutive from the
same word as rack: cf. F. rochet. See 2d {Ratch}, {Rack} the
instrument.]
1. A pawl, click, or detent, for holding or propelling a
ratchet wheel, or ratch, etc.
[1913 Webster]

2. A mechanism composed of a ratchet wheel, or ratch, and
pawl. See {Ratchet wheel}, below, and 2d {Ratch}.
[1913 Webster]

{Ratchet brace} (Mech.), a boring brace, having a ratchet
wheel and pawl for rotating the tool by back and forth
movements of the brace handle.

{Ratchet drill}, a portable machine for working a drill by
hand, consisting of a hand lever carrying at one end a
drill holder which is revolved by means of a ratchet wheel
and pawl, by swinging the lever back and forth.

{Ratchet wheel} (Mach.), a circular wheel having teeth,
usually angular, with which a reciprocating pawl engages
to turn the wheel forward, or a stationary pawl to hold it
from turning backward.
[1913 Webster]
[1913 Webster]

Note: In the cut, the moving pawl c slides over the teeth in
one direction, but in returning, draws the wheel with
it, while the pawl d prevents it from turning in the
contrary direction.
[1913 Webster]


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


  • What does ratchet mean and when was it first used?
    From them I learned the following things about ratchet What does 'ratchet' mean, and how is it pronounced? Ratchet [is] used to describe someone means nasty, ghetto or trifling —Janet Ratchet also means a situation or process that is perceived to be deteriorating or changing steadily in a series of irreversible steps
  • meaning - What is a word that could define someone who likes to cause . . .
    Scheming does not carry the meaning of causing harm to others You can scheme for personal gain without necessarily hurting anyone or, at least, without that being your objective Instigate doesn't have the required meaning at all, the OP is asking for a word that describes someone who purposefully causes pain in others Also, please include the sources for your definitions
  • single word requests - English Language Usage Stack Exchange
    While I know you can attribute 'bitch' to a male, I feel there is a sense of femininity I was wondering if there is a colloquial equivalent that describes someone with the qualities of a 'bitch'
  • More formal way of saying: Sorry to bug you again about this, but . . .
    A good question: I'm in a similar quandry with a supplier, but after 'sorry to bother you' email or two, I started to ratchet-up the bluntness :)
  • Where did the phrase batsh*t crazy come from?
    The word crazy is a later addition Scanning Google Books I find a handful of references starting from the mid-60s where batshit is clearly just a variation on bullshit (nonsense, rubbish) - which meaning still turns up even in 2001, but it's relatively uncommon now Here's a relatively early one from 1967 where the meaning is crazy A decade later most references have this meaning, but the
  • Forward vs Forwards - English Language Usage Stack Exchange
    The OED says this The present distinction in usage between forward and forwards is that the latter expresses a definite direction viewed in contrast with other directions In some contexts either form may be used without perceptible difference of meaning; the following are examples in which only one of them can now be used: ‘The ratchet-wheel can move only forwards’; ‘the right side of
  • meaning - English Language Usage Stack Exchange
    Terry Pratchett used in his disc world novels the word "avec" as a common food ingredient for french (in his books named "quirmian" or "Quirm" for the country) food Excerpt from "Snuff" by Terry
  • metaphors - English Language Usage Stack Exchange
    ADDED: It is possible that a third sense of racket contributed Racket is found in some 18th-and 19th-century texts as a variant of ratchet, a toothed wheel or bar, or a tooth or click for stopping the action of such a wheel or bar, and the general notion of device might have fed into the meaning This sense survives in modern rackets
  • Word for resetting or recalibrating - English Language Usage Stack . . .
    Since the OP wants the sentence to conjure in readers a sense of "quantifiable relationship", if you will, I suggest the phrasal verb ratchet down, which readily evokes this sense (ratchet, by the way, consists of a toothed wheel and a bar which governs motion; the phrasal verb furnishes the notion of metaphorical motion)
  • sentence - What does the phrase, “there is properly no history, only . . .
    I found Ralph Waldo Emerson's famous words, “ there is properly no history, only biography,” in his “Essay I” being quoted in the article titled “Keeping the dream alive: A biography,” appearing in June 21, 2012 Time magazine The article deals with the collapse of American Dream, and “there is properly no history ” comes in the following sentence: “There is the crisis of





中文字典-英文字典  2005-2009