The insecticidal action must be considered doubtful.
这个杀虫作用是值得怀疑的。
As for insecticidal action, but also needs the deep person to study.
至于杀虫作用，还需深人研究。
CA proved to enhance the insecticidal action of the plant aromatic oils, especially that of citron oil.
结果表明，气调具有增强红桔油松节油及柠檬油的杀虫效果，对柠檬叶油的增强作用最为明显。
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