ObjectiveTo explore differences in the closure speed abilities of various professions and their age-effects.
目的探讨趋向速度能力的职业差异及其年龄效应。
The second step is to select the closure may be required to meet the speed of the check valve type.
第二步是选择可能满足所需要的关闭速度的止回阀类型。
State regulation of coal production, the closure of some of the poor conditions of small coal mines, coal supply will cause a decrease in the market, thus delaying coal prices downward speed.
国家加强对煤炭生产的调控，关闭部分条件差的小煤窑，也会造成市面上煤炭供给量的减少，从而延缓煤价下调速度。
State regulation of coal production, the closure of some of the poor conditions of small coal mines, coal supply will cause a decrease in the market, thus delaying coal prices downward speed.
国家加强对煤炭生产的调控，关闭部分条件差的小煤窑，也会造成市面上煤炭供给量的减少，从而延缓煤价下调速度。
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