The report talks about the principles, structure, accuracy analyses, main technical data, characteristics, adjustment and application of a new type internal focusing device for centring.
本报告介绍了一种新型内调焦对心器的原理、结构、精度分析、主要技术参数、特点、仪器的调整及使用。
This paper deals with the principles of several solutions used generally in the partitioning adjustment of a free network with rank-defects, and several adjustment methods are suggested.
本文探讨亏秩自由网的几种常用解法的分区平差原理，提出了几种分区平差方法。
The operation principles of adjustment programs and circuits of the fuel regulation system for a ramjet engine at high altitude are introduced in detail.
详细介绍了高空工作的某型冲压发动机燃油调节系统的调节方案和调节线路的工作原理，叙述了该调节系统有关参数的测量方法。
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