The bi component polyurethane coating of water proofing was synthesized by T 80 polyether polyol and coal tar. The properties of the coating film were tested and the effect factors were studied.

采用T-80聚醚多元醇与煤焦油为主要原料，合成了双组分聚氨酯防水涂料，对涂膜性能进行了测试，并对其影响因素进行了研究。

youdao

Conclusion Direct antibody coating of immunomagnetic beads can isolate CD4 + t lymphocyte subpopulation effectively.

结论用直接包被法制备的免疫磁珠具有较好的分离CD 4 + T淋巴细胞亚群效果。

youdao

The embedded nanometer diamond particles don′t change the structure of Ni-P matrix, but coarsen the surface of the composite coating with a large number of spherical particles.

纳米金刚石的嵌入不改变复合镀层的结构，但使镀层表面形成不平整的、微小球粒堆砌状形貌。

youdao