The way for defining the instantaneous release and the continuous release, and the criteria for determining the passive phase of the transition of the heavy gas are put forward.
提供了确定瞬时泄漏和连续泄漏的方法，以及判定重气扩散时转变为中性阶段的准则。
The existential states of bismuth in silver filler metals is also analyzed. And the continuous course of phase transition is studied. The mechanism of the influence is revealed.
分析了杂质元素铋在银基钎料中的存在状态，以及在钎料的加热过程中铋的相变行为，从而揭示了银基钎料中铋的影响机理。
The existential states of bismuth in silver filler metals is also analyzed. And the continuous course of phase transition is studied. The mechanism of the influence is revealed.
分析了杂质元素铋在银基钎料中的存在状态，以及在钎料的加热过程中铋的相变行为，从而揭示了银基钎料中铋的影响机理。
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