This paper introduced an automatic air mixing equipment for gas protection welding at work site, which can control the accurate proportion of airs.
介绍了一种用于焊接现场的气体保护焊的自动混气设备，该设备能精确控制气体混合比例。
2
The paper discusses the principle of PCT testing equipment; the over-all control scheme for the gas-solid reaction controller is decided.
在详细考察国外现有PCT测试装置及其原理的基础上，本文给出了气体-固体反应控制器的整体控制方案。
3
Equipment operating in conjunction short distance, operating temperature control, and construction of flue gas in small, more environmentally friendly.