HG/T 4113-2009.Gas leakage rate measurement method of mechanical seals for a kettle. 1范围 HG/T 4113规定...
HG化工标准
HG化工标准
HG化工标准
HG/T 4113-2020 代替HG 4113-2009 釜用机械密封气体泄漏测试方法
HG/T 4113-2020.Gas leakage rate measurement method of mechanical seals for stirred vessel. 1范围 HG/T ...