Introduced control system, main construction process, working theory and working method.
介绍了定向钻穿越控制系统、主要施工程序、作业原理和作业方法。
The character, process and working theory of SDR sewage treatment equipment series were introduced.
具体介绍sdr系列污水处理设备的特点、工艺流程及工作原理。
Working theory and system structure of PET is analyzed in this paper.
简单分析PET的工作原理与系统构成。
Working theory and system structure of PET is analyzed in this paper.
简单分析PET的工作原理与系统构成。
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