定时

The design is mainly used to achieve the function of distance measuring, detecting, alarming and timing.

摘要本设计主要实现测距、检测报警以及定时功能。

Thus the volume of employment is not determined by the marginal disutility of labour measured in terms of real wages, except in so far as the supply of labour available at a given real wage sets a maximum level to employment.

而在实际工资既定时，所可能提供的劳动供给量仅仅决定就业量的最高水平，消费倾向和新投资量二者才决定就业量，就业量又唯一地决定于既定的实际工资水平——而不是颠倒过来。

He sometimes took bold stances while his party dithered: he opposed George Bush junior's Iraq war from the start.

他有时在他的党犹疑不定时采取了大胆的立场：他从一开始就反对乔治·布什的伊拉克战争。

When people are least sure, they are often most dogmatic.

当人们越不确定时，他们经常越固执己见。

When wepossess information about the values of a Copula at points in its domain of definition,the bounds can often be narrowed.

本文证明了由Copula及其生存、对偶和伴随Copula组成的集合在函数的复合运算下构成了Klein四元群，求解了群中元素的界以及它们在某个点处的函数值给定时的界。

2According to requirement of suppressing stray light in two-mirror system, vertex coordinate formulas of inner baffle are deduced based on geometrograph in the case of certain obscuration, viewing field and vignetting. In order to reduce the obscuration, conical baffle of secondary mirror is ameliorated into a shutter one. Outer baffle is designed when angle of stray light suppressing is foregone and the vanes are designed in C-language program. Finally, the same-height vanes in drawtube between primary and secondary mirrors are designed for further suppressing the stray light in two-mirror system.

给出双反射系统杂散光消除设计的具体要求，结合作图法，推导出考虑视场大小及初始中心遮光比确定时，主次镜内遮光罩顶点坐标公式；讨论考虑渐晕时主次镜内遮光罩的设计；为了减小初始中心遮光比，将次镜锥状遮光罩改进为百叶窗式结构；设计在杂散光源抑制角已知时的外遮光罩，并利用C语言实现程序化设计其挡光环的方法；设计主、次镜间镜筒内壁上等高挡光环，进一步抑制双反射系统的杂散光。

Every dish in Duwang is dainty, take the roast duck as the example; it has a set of principle from duck breeding, deck selection, duck crammed to duck cooking. The principle of duck breeding---we selected the Beijing Chaobai River as our duckery with the mountain and water, full of water source and unpopulated water surround it, we use the pro-environment duck fodder to feed the ducks aborative and timing.

而"都王"的每道菜都是很有讲究的，以烤鸭为例，从养鸭，选鸭，到填鸭，再到烹鸭，都有一套道理：养鸭之道——选址有山有水，水源充足、水质无污染北京潮白河畔，采用环保鸭饲料，精心、定时喂养。

With some of the creative decisions over at EA, it just made it difficult to stay there.

有一些创造性的决定时，这就使海水很难留在那里。

The High-speed Rail's elevated track comes within 20 meters of area homes, who say that early tests have been ear-splitting.

高铁的高架桥距离住户最近仅仅十几公尺，有住户就说这几个月来高铁不定时试车，震耳欲聋。

PLC is one kind on the basis of technology of digital computer, electronic control device designed to use under the environment of industry specially, adopt it by memory that can programme, it is last user order not to used for,through figure or introductions of simulation /export, finish such functions confirmed as a series of logic , order , timing , counting , operation ,etc., to control all kinds of integrated equipment of electromechanics and production process.

PLC是一种基于数字计算机技术、专为在工业环境下应用而设计的电子控制装置，它采用可编程序的存储器，用来存储用户指令，通过数字或模拟的输入/输出，完成一系列逻辑、顺序、定时、记数、运算等确定的功能，来控制各种类型的机电一体化设备和生产过程。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。