The best design is made according to the design and analysis of practical retaining structure with double-row piles and as well as the revision of different programs with PKPM.
依托实际工程进行双排桩支护结构的设计，分析比较，再利用PKPM计算软件对不同方案进行计算校验，得出最佳设计方案。
However, the design of piles still exist many problems, and the result of the design still has some uncertainties, especially the design of double row piles is more immature.
但是，抗滑桩的设计仍然存在诸多问题，结果还存在一些不确定性，尤其是双排抗滑桩的设计，更加不成熟。
The design target, operation conditions and main technical parameters of the 353130X2-2RZ double row cone roller bearings are described.
介绍了353130X2—2RZ型双列圆锥滚子轴承的设计目的、运用条件及主要技术参数。
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