What should be prepared before disassembly of cylinder for main engine/auxiliary engine?
在拆卸主机和副机气缸之前应作什么准备工作?。
Researchers were provided an old auxiliary powered gas turbine engine by French aerospace supplier Safran that could be pulled apart and copied using a 3D printer.
研究人员由法国航空航天供应商赛峰集团可能被拉开，并使用3D打印机复制提供了一个古老的辅助动力的燃气涡轮发动机。
The hydraulic valve auxiliary control unit (12) can be connected and cut off by means of an additional auxiliary oil circle (3) related to a main oil circle (2) of the internal combustion engine (1).
液压气门辅助控制单元（12）可借助于一相对于内燃机（1） 的主油回路（2）附加设置的辅助油回路（3）接通和切断。
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