Technology meant you could manage your work-play ratio so much better.
在过去，科技意味着你能更好地分配工作和娱乐时间；
In cemented filling method, to choose a proper water cement ratio is an important work.
在胶结充填采矿法中，选择一个恰当的水灰比是一件十分重要的工作。
The advantages of gear Instantaneous transmission ratio constant, steady work is high.
齿轮传动的优点瞬时传动比恒定，工作平稳性较高。
The advantages of gear Instantaneous transmission ratio constant, steady work is high.
齿轮传动的优点瞬时传动比恒定，工作平稳性较高。
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