精密

Use:In coordination with the leveling instrument,optical flatness measuring instrument and electronic leveling instrument to test the flatness of plate,leveling ruler,machine tool working platform ,guides and precision workpiece.

用途：用途：配合水平仪、光学平直仪、电子水平仪用来检测平板、平尺、机床工作台、导轨和精密工件的平面度。

In coordination with the leveling instrument, optical flatness measuring instrument and electronic leveling instrument to test the flatness of plate, leveling ruler, machine tool working platform, guides and precision workpiece.

配合水平仪、光学平直仪、电子水平仪用来检测平板、平尺、机床工作台、导轨和精密工件的平面度。

Optics and Precision Engineering, 1997, 5(5): 30～35 in Chinese

光学精密工程， 1997， 5(5)： 30～35

Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800, China

中国科学院上海光学精密机械研究所，上海 201800

At last, we talked about three problem in precise orbit determination of lunar satellite.

最后一章讨论月球卫星精密定轨中的三个问题。

Besides, the realizing of LP estimation on the precise orbit determination is discussed in detail.

三LP估计在卫星精密定轨中的应用。

Furthermore, a strategy of precise orbit determination for lunar satellites is presented, which combines analytical and numerical methods. It is assessed to be reliable and practical.

在此基础上，建立了一种数值方法和分析方法相结合的月球卫星精密定轨方法，并以仿真计算证实了方法的可靠性与应用前景。

Remember it is the instrument of your life, not just an ornament.

记住，它是你人生精密的仪器，而不是仅仅是个装饰品。

A simple circuit breaker delivers precision overvoltage protection and overcurrent protection.

一个简单的电路断路器提供精密过压和过流保护。

The company has a daily output of 0.5-200/h, and its main products include multi-media filter, activated carbon filter, softener, precise filter, reverse osmosis equipment, N-series filter, cation exchanger, anion exchanger, ion exchanger, EDI, ultrafilter, ultraviolet ray bacteria killer, ozonizer, pinhole filter, dosing machine, filling machine, water tank, etc..

公司目前的成套生产能力为0.5-200 /h，主要产品包括多介质过滤器、活性碳过滤器、软化器、精密过滤器、反渗透主机、纳滤、阳离子交换器、阴离子交换器、混合离子交换器、EDI、超滤、紫外线杀菌器、臭氧发生器、微孔过滤器，计量加药装置、灌装设备及水

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。