direct syntheses

• 直接合成

direct syntheses的用法和样例：

例句

1. The nucleus of the bleached cell was unable to direct the synthesis of new chloroplasts.
   这种漂白的细胞核不能直接合成新的叶绿体。
2. The pesticide products of diketene produced by direct synthesis or biosynthesis were introduced.
   介绍了由双乙烯酮直接合成或由其衍生物合成的农药品种。