基于旋转调频调制盘的定位原理，研究了某型号瞄准制导仪中调制盘图案的设计特点。
Based on positioning principle of rotating frequency-modulated disk, designing characteristics of patterns for some-model guided sight instrument are studied.
利用球盘磨损试验机和电化学综合测试仪研究了IBED膜层的摩擦学性能和电化学腐蚀特性。
The wear resistance and electrochemical corrosion properties of IBED coatings were investigated with ball-on-disk wear tester and electrochemical equipment, respectively.
大地经纬仪的度盘直径一般为140毫米。
Geodetic theodolites generally have circles of about 140mm diameter.
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