It is clear that in order to be highly qualified for o hydraulic cylinder ut future jobs, we should make every possible preparation.
显然，为了能够完全适应我们未来的工作，我们必须做好一切可能的准备。
Preparation of copper and iron cylinder are investigated.
进行了铜、铁柱腔制备技术的调研工作。
Preparation of copper and iron cylinder are investigated.
进行了铜、铁柱腔制备技术的调研工作。
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