A system step, however, is not a good basis for delineating a use case transaction, for it depends on the granularity of the description of a flow how many steps you count.
但是，一个系统步骤并不是描述用例事务的一个较好的基础，因为它取决于对您计算的多少步骤的描述。
Ultra-fine tungsten powder was obtained from blue tungsten oxide by hydrogen. The effect of temperature, weight and flow rate of hydrogen on granularity of W-powder also was studied.
以蓝钨为原料，通过氢还原制取超细W粉末，研究了还原温度、装舟量和氢气流量对制取W粉粒度的影响。
Ultra-fine tungsten powder was obtained from blue tungsten oxide by hydrogen. The effect of temperature, weight and flow rate of hydrogen on granularity of W-powder also was studied.
以蓝钨为原料，通过氢还原制取超细W粉末，研究了还原温度、装舟量和氢气流量对制取W粉粒度的影响。
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