查询词典 if

The abscissa at the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system,the arc being of length x and measured counter clockwise from the point(1,0)if x is positive or clockwise if x is negative.

余弦以笛卡儿坐标系原点为圆心的单位圆的圆弦端点的横坐标，弧的长度为x，如果x为正，弧的长度则从(1，0)点按逆时针方向算起，若x为负，则按顺时针方向从(1，0)点算起

Then R is an Archimedean domain if and only if a is contained in some minimal prime ideal of R for every nonzero nonunit a.

则有R是阿基米德整环当且仅当a含在R的某个极小素理想中。

For example, if you wanted to research what TV shows were playing on Fox in 2002, all you would have to do is search for www.fox.com on the archives and then you can navigate around the archive site almost as if it is still a live web page.

举例来说，如果你想研究什么电视节目，播放着福克斯在2002年，所有你需要做的是寻找www.fox.com关于档案，然后你可以浏览各地档案网站几乎一样，如果它仍是一个活生生的网页。

If the argument n to the function had the value 3, then array will act as if it had been declared as

如果函 数的实参 n 的值为 3，那么数组的行为就如同这样声明的

This one question if answered honestly will let you know if you will be good at writing good argumentative essays .

这一个问题，如果诚实地回答会让你知道你是否能够善于写作的优秀议论文。

First the math theory of machining simulation is studied, and the set structure of NC machining simulation system whose components, including time, input, output and so on, are defined. Hereby we set up the hierarchy structure, the logical structure, the static model and the dynamic model of simulation system. The construction method of sweep entity of cutter and rotation parts is researched, and their differential geometry invariants are calculated. NC code is unscrambled, and the recursion division arithmetic of time segment is put forward, which is the driven data of the movement or rotation parts. The CLDATA should be interference-free. To examine if there is interference between cutter flank and the work piece, an arithmetic that discussed the existence of intersecting curve between them is put forward. To examine if there is interference between two turrets, an arithmetic that discussed the existence of intersection set between two polygons is put forward.

首先研究加工过程仿真的数学基础，然后定义数控加工仿真系统的集合结构及时间集、输入集、输出集等概念，建立加工仿真的层次结构和逻辑结构，阐述双刀车削仿真系统的静态模型和动态模型建立方法，分析刀具扫描体和旋转部件扫描体的建立方法及其微分几何性质；研究NC代码解读技术和双刀加工时间段递归子分划技术，为驱动各仿真单元作数据准备；通过讨论后刀面和工件表面交线的存在性判断刀具后刀面与工件间是否干涉，通过求多边形的交集判断刀架与刀架是否干涉。

His book is mathematically demanding, but it boils down to a few key concepts: there is an optimal f for every trade; if you bet less, your risk decreases arithmetically while profit decreases geometrically; if you keep betting more than the optimal f, you are guaranteed to go broke.

他的书用了很多数学计算，但最终总结为以下几点：每笔交易都有完美的 f；如果你赌的少，风险是数字式的减少而利润是几何级的减少；如果你投入的比最完美的 f 多，你肯定会破产。

If, owing to delay, deviation, forced discharge, reshipment or transhipment beyond the control of the Insured or any change or termination of the voyage arising from the exercise of a liberty granted to the shpowners under the contract of affreightment, the insured goods arrive at a port or place other than that named in the Policy, subject to immediate notice being given to the Company by the Insured and an additional premium being paid, if required, this insurance shall remain in force and shall terminate as hereunder

二由于被保险人无法控制的运输延迟、绕道、被迫卸货、重行装载、转载或承运人运用运输契约赋予的权限所作的任何航海上的变更或终止运输契约，致使被保险货物运到非保险单所载明目的地时，在被保险人及时将获知的情况通知保险人，并在必要时加缴保险费的情况下，本保险仍继续有效，保险责任按下列规定终止。

And if you will only promise to treat me _en bon camarade_, without reference to the conventionalities of 'ladies and gentlemen,' taking no thought for your sentences, nor for your blots, nor for your blunt speaking, nor for your badd speling, and if you agree to send me a blotted thought whenever you are in the mind for it, and with as little ceremony and less legibility than you would think it necessary to employ towards your printer--why, _then_, I am ready to sign and seal the contract, and to rejoice in being 'articled' as your correspondent.

如果您能承诺对待我_en bon comarade _，不带有那些"女士们先生们"的陈词滥调，不要顾及您的句子，不要顾念您的涂改，不要担心您的直言不讳，或者您的拼写错误，如果您承诺一旦您有了想法便把这断断续续的想法递送给我，而不要任何的客套或者整理，虽然也许您认为有必要但其实没有必要——那么，我便准备好与您签署这样的协议，欣喜地成为您"受雇"的笔友。

I don't know if the creators of these types of sites are artsy per se, but if they are not, they still seem to produce some incredibly beautiful sites.

我不知道这些网站的制作者本身是否就是艺术家，如果不是的话，他们仍然制作出了令人难以置信的漂亮的网站。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷