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1)  direct light
直光
2)  collimated light
准直光<光>
3)  fiber diameter
光纤直径<光>
4)  laser collimation
激光准直
1.
Study of large diameter measurement system with laser collimation;
基于激光准直瞄准的大直径测量系统的研究
2.
In order to realize synthetic coaxiality measurement for position deviations and angle deviations simultaneously,a laser beam-spot receiver system consisting of a receiver lens,beam splitter prisms,and CCD based on laser collimation was established.
为了实现在同轴度测量中平行偏差(平偏)和倾斜偏差(角偏)两个量的同时测量,建立了基于激光准直性的光斑接收系统。
3.
Based on the principle and technology of laser collimation and optoelectronic inspection, an optoelectronic measuring method is presented to measure the straightness of the bore with a diameter of 25 mm by using the quadrant detection method, technique of laser collimation, optoelectronic detection, precision machine, servocontrol and computer for reference.
基于激光准直和光电探测原理与技术,并借鉴象限探测法、精密机械、伺服控制技术和计算机技术研制了一种用于Φ25mm火炮身管直线度的光电测量系统。
5)  direct current glow discharge
直流辉光
1.
Determination of eleven elements in stainless steel by direct current glow discharge-optical emission spectrometry;
直流辉光放电光谱法测定不锈钢中11种元素
6)  light spot diameter
光斑直径
1.
This paper is concerned with the laser ignition performance of energetic material affected by the light spot diameter using photoelectric method.
用光电探测法研究了激光光斑直径对含能材料激光点火特性的影响。
补充资料:直接光气化法聚碳酸酯
分子式:
CAS号:

性质:又称直接光气化法聚碳酸酯。由双酚A经光气化反应制得的聚碳酸酯。具有分子量较高,副反应少的特点。机械性能、电性能和透明性较优于酯交换法聚碳酸酯。相对密度1.19~1.21,热变形温度127~138℃,连续使用温度110~116℃;拉伸强度62MPa,弯曲强度90MPa,压缩强度86MPa,冲击强度(缺口)45~50kJ/m2;体积电阻率1.0×1015Ω·cm,介质损耗因数(106Hz)0.01。以双酚A为原料,在催化剂存在下与光气进行光气化和缩聚反应制得。可用作机械工业用零部件,受力不大的紧固件;电子,电器工业用零部件;医疗器械;安全帽;飞机、车、船风挡玻璃等。

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