由于各种机械有着不同的工作条件，对滚动轴承在负荷能力、结构和使用性能等方面都提出了各种不同要求。
As machinery has a different working conditions, the load bearing capacity, structure and performance in such aspects as proposed by a variety of different requirements.
为满足各种不同的实际要求，地道桥有着各种不同的结构形式、设计手段及施工方法。
For satisfying various different actual requirements, underpass Bridges have the forms of various different structures, design means, and construction methods.
同时，各种各具特点的工程环境对电缆的型号、材质、性能都有着特定的要求。
At the same time, with different characteristics of the engineering environment on cable model, material, the performance has a certain requirements.
同时，各种各具特点的工程环境对电缆的型号、材质、性能都有着特定的要求。
At the same time, with different characteristics of the engineering environment on cable model, material, the performance has a certain requirements.
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