二层织法 bi-component knit
由一种独特的二层织法 Bi Component knitting
二层减法聚类 two-layer subtraction cluster
分层二段抽样法 stratified subsampling method
用3-BAPP与多种二酐合成出多种聚酰亚胺，并在二层法挠性覆铜板（2L-FCCL）的应用方面做了一些研究。
Various polyimide was synthesized from 3-BAPP with various dianhydrides. The application of the polyimiders to two-layer flexible copper clad laminate(2L-FCCL)was researched.
西安市西北大酒店二层客房增加五层，对地基与结构墙体加固补强，采用预压桩托换及钢筋网片夹板墙法。
Precompressed pile foundation under pinning technique is used to reinforce the foundation and structural wall for adding the building named Xibei hotel from two floors to seven floors in Xian city.
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