初加工的英文：
pretreating

8 The mud should be pretreated with Bicarbonate while drilling cement.
当钻水泥塞时，应该用小苏打对泥浆进行预处理。

With systeamine pretreatment decreased yields of dominant lethals were obtained in spermatocytes, spermatids and in spermatozoa.
用半胱氨预先处理，在精母细胞、精子细胞和精虫内均可使显性致死突变值下降。