- 生化学 shēnghuàxué biochemistry
- 生化武器 shēnghuàwǔqì biochemical weaponbiological and chemical weapons; biochemical weaponry
- 生化需氧量 shēnghuàxūyǎngliàng biochemical oxygen demandthe amount of dissolved oxygen needed by aerobic biological organisms to break down organic material in a given water sample; abbreviated as BOD