The drugs work well at first but gradually lose their effectiveness.这些药的效果起初非常好,但后来逐渐失效.To assert this is to denigrate the effectiveness of the police.坚持这一点就是贬低警方的办事能力.Bad diction marred the effectiveness of his speech.措...
To evaluate the effectiveness and reliability of hemodialyzer LSHT 160.目的评价LSHT160型血液透析器的有效性及安全性.The good effectiveness of AMPS copolymers had been demonstrated in field application.AMPS聚合物及钻井液体系在现场应用表明:该体系在应用中粘切容易控制,钻井液...