sjy
- 网络塞伊奈约基
sjy-
The sjy brightened around noon ; Her face brightened when she heard the good news .
当她听到这个好消息的时候她的脸变明亮了。
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Principle and applications of Model SJY projection type sintering point tester are presented briefly , its shortcomings analyzed , and improvement on control circuit , mechanical construction ect suggested to increase control precision and for convenience of installation and adjustment .
简要介绍SJY型影象式烧结点试验仪的原理、用途，并分析其原有缺点，着重在电气控制线路、机械结构等方面作了改进，以提高控制精度，方便安装调整。