additive index造句

例句与造句

1. The joint toxicity of heavy mental ions lead , zinc and cadmium to hydra sp . was evaluated using the additive index method
   摘要以水螅为实验生物，采用相加指数法，研究了铅、镉和锌3种重金属离子复合污染物的联合毒性。
2. It's difficult to find additive index in a sentence. 用additive index造句挺难的