这些曲线是确定受腐蚀金属机件或构件疲劳日历寿命的依据。
Fatigue damage cumulative rule after calendar corrosive environment is crucial for determining calendar life of aircraft structure.
用途：台车式电阻炉系周期作业式电炉，可供大中型金属机件和材料的正火、淬火退火等热处理和加热之用。
Applications: the bogie hearth electric resistance furnace is a batch type furnace, it is used for normalizing, quenching, annealing and other heat treatments of large or medium metal parts.
阀门的优点：用金属横膈膜代替人造橡胶衬垫在阀门和阀杆的顶部机件处给予了这种阀门出众的泄漏完整性。
Valve Advantages: The replacement of elastomeric packings by metal diaphragms gives this valve superior leak integrity at the top works of the valve and stem.
阀门的优点：用金属横膈膜代替人造橡胶衬垫在阀门和阀杆的顶部机件处给予了这种阀门出众的泄漏完整性。
Valve Advantages: The replacement of elastomeric packings by metal diaphragms gives this valve superior leak integrity at the top works of the valve and stem.
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