通过吸气饱满及推、挡气功能系统的合理对抗，使腔体在吹奏中产生“二次膨胀” ，“憋气”问题便会得到解决。
The writer held that with the inhaling fully and the push block breath system, it could make the cavity re distend in the blowing, then the problem of choking would be solved.
磁芯经过二次退火后，由于封装胶发生膨胀使得被封装的磁芯电感值严重下降，软磁性能下降。
After cores being secondary annealed, expansion of packaging glue happen, which causes that the inductance value of magnetic-cores declined seriously, soft magnetic properties reduced.
对影响循环的主要参数分析表明，二次冷媒的冷凝温度及膨胀机进口压力对循环的效率影响很大。
From an analysis of the cycle influencing main parameters it is ascertained that the condensing temperature of secondary cooling medium exercises a very great influence on the cycle efficiency.
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