A new experimental scheme of measuring lens focal length has been put forward on the basis of the improved laser plate shearing interference method.
本文在改进的激光平板剪切干涉法基础上，提出了测量透镜焦距的一种新的实验方案。
Furthermore, the relation of fabric drapability and stretching-length, flexual modulus and shearing modulus is also discussed.
初步研究了织物伸出长度、弯曲刚度、剪切刚度对静态悬垂系数的影响。
SILMEN full-speed shearer is an important device for fixed-scale steel tape shearing. Its running speed is highly related to the length and thickness of the steel tape.
斯罗曼飞剪机是实现带钢定尺剪切的重要设备，其运行速度与带钢的长度和厚度有关。
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