Stoichiometry of hydrogen didn′t influence the performance of the stack effectively.
氢气过量系数对电堆性能影响不大；
The method doesn′t influence the flow state of molten metal in the mould and easily displays mould filling process.
该法几乎不影响金属液在型腔内的流动状况，能方便地反映金属液充型过程。
The method doesn′t influence the flow state of molten metal in the mould and easily displays mould filling process.
该法几乎不影响金属液在型腔内的流动状况，能方便地反映金属液充型过程。
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