介绍了某型号运载火箭二级燃料箱后底顶盖成形方法改进及工艺试验过程。

The paper introduces the shaping method improvement and technological trial course of bottom cap of certain model of carrier rocket's fuel tank.

youdao

介绍了车用空调压缩机罩体支架的冷挤压成形工艺及冷挤压模具设计，采用工艺试验的方法确定挤压坯料尺寸。

The forming process by cold extrusion for the hood pedestal of the auto air_conditioner compressor and the design of the cold extruding die were introduced.

youdao

对醇酸树脂合成方法及影响因素进行了试验和分析，确定了改进合成工艺条件、提高醇酸树脂质量的方法。

Some experiments are made so as to change the process parameters for processing alkyd resin and then, to improve the quality of the resin.

youdao