继发性污染

从而大大地降低了工人的劳动强度，使药品制备工艺得到了简化和提升，听高了药品的收得率，避免了药品在生产过程中的二次污染。

secondary hyperparathyroidism

by-pass accumulator【电】;secondary cell【电】

secondary thickening

secondaryorder conditioned stimulus

secondary reaction

secondary memory

secondary ion mass spectroscopy\nSIMS\n物

secondary amyloidosis