词条纠错

PSA

生词本：添加笔记：

有奖纠错

|　划词

abbr. 美国摄影协会（Photographic Society of America ）；美国诗社（Poetry Society of America）；公共事业管理（Public Service Administration ）；公用事业协会（Public Service Association）

近义、反义、联想词

近词

protein

想词

prostate前列腺;

英语例句库

Granite as raw material,PSA is made in a series of aggregat e reactions of chemical fusibility.

选用花岗闪长岩为原料，通过一系列的学熔融聚合应制新型絮凝剂--聚硅酸铁铝盐絮凝剂。

The mucin is positie for mucicarmine, PAS, and alcian blue.The glands are negatie for PSA and PAP.

粘蛋白胭脂红染色、PAS染色和阿辛蓝染色阳性，免疫组PSA和PAP染色阴性。

Humic acid (HA ) was abstracted from leonardite,and a composite superabsorbent (HA PSA ) was prepared by compounding poly (acrylic acid ) and lignitic humic acid.

褐煤为原料制备腐植酸(HA),将HA与普通型保水剂(PSA)复合,获得HA型保水剂(HA-PSA)。