石英

A spectroscopic method to determine thickness of quartz wave plate is presented. The method is based on chromatic polarization interferometry.

本文基于色偏振干涉原理，提出了一种测量石英波片厚度的光谱测量方法。

Alternatively, calibration may be checked using a Polarization Reference Standard, which consists of a plate of quartz mounted in a holder perpendicular to the light path.

或者，校准可以通过使用一个偏振标准品来进行，该标准品由一片装在垂直于右侧通道的架子上的石英构成。

A Spectrometer Method for Determining Thickness of Quartz Plate Along the Crystal Axis.

测量石英晶体光轴方向厚度的光谱分析法。光学学报， 2007， 27(11)： 2082～2086

In the experiments,beam bugs were used to detect the beam currents and the beam positions,and the Cerenkov radiation generated by the electron beams interacting with a quartz plate was used to get the information of the beams.

在实验中，电子束流强度和电子柬心运动用电阻环进行测试，而电子束和石英玻璃的相互作用产生的契仑科夫辐射用来给出电子束包络和发射度信息。

Polarizated-light interference spectrum of quartz wave plate.

石英波片偏光干涉谱的研究。

After many experiments with aluminium foil of various thicknesses he was able to publish, in 1894, his great discovery that the plate of quartz that had, until then, been used to close the discharge tube, could be replaced by a thin plate of aluminium foil just thick enough to maintain the vacuum inside the tube, but yet thin enough to allow the cathode rays to pass out.

1888年莱纳德在海德堡大学昆克手下工作，他完成了他关于阴极射线的第一项研究成果，他研究了当时赫兹关于阴极射线有与紫外线相似特性的观点，并设计了一个实验，以探究阴极射线是否像紫外线一样，能够通过放电管壁上的石英窗，他获得的结果是阴极射线没有这样的特性。

Computation of the vibration displacement distribution in circular AT cut quartz plates was carried out by finite element analysis code ANSYS, when quartz plate was subjected to a force along its diameter.

利用有限元理论，对AT切石英晶体沿不同方位角度施加对径力作用时，计算晶片内的振动位移分布情况。

First , we analyze the relation between thickness-shear and flexural vibrations mode in the AT-cut quartz crystal plate by Mindlin elastic plate theory , then obtain the result by the improved Mindlin plate theory , finally compare them and find the differences . The result of improved Mindlin plate theory excelled the Mindlin plate theory .

我们首先用Mindlin弹性板理论分析了AT切石英晶片中厚度-剪切和弯曲振动模态之间的色散关系，再用修正后的Mindlin板理论得到色散关系，并对两者进行比较说明，修正后的Mindlin板理论得到的结果明显要优于Mindlin板原理论。

Problems existed in a micro-reactor evaluation unit were analyzed, some improvements were also made including feeding method from liquid to gas, replacing stainless steel wire mesh in reactor with special quartz sieve plate , decreasing pipeline in collective system and replacement of pressure water method by vacuum dehydration.

分析了旧微反应评价装置存在的问题，并对其进行了如下改进：进料方式由液体进料改为气体进料；反应器内原有的不锈钢丝网用定制的石英筛板替换；收集系统减少了管线，并用真空吸水法替代了压水法。

To the divisions which are engaged in biology, chemistry, medecine,sanitation, food, detective work, archaeology and to the factories of lamp production and glass production in which the ultraviolet transminssion rate of filter plate and quartz glass plate are measured meter is a necessary for often use purposes.

可广泛适用于测量各种场合的紫外辐射强度，对从事生物、化学、医疗、卫生、食品、侦破、考古部门和对测量滤色片及石英玻璃片的紫外线透过率，是生产灯泡和玻璃制品厂等单位的必备的检测仪器。

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％。