Studies on Macrocentrus linearis, including its biology, natural parasitic rate and the field control effect on Ostrinia furnacalis are reviewed in this paper.
本文综述了对螟虫长距茧蜂的研究概况，包括该寄生蜂的主要生物学习性、对玉米螟自然寄生率及田间防治玉米螟效果等。
Taking core loss into account has important effect to improve the torque performance of the motors' field oriented control.
考虑铁损对于提高异步电动机磁场定向控制下的转矩性能具有重要的作用。
The control effect was 92.3% to peach mould core disease by spraying preparation of PB97 in the field.
田间小区采用PB97制剂对桃霉心病的防治效果为92 .3 % ，可有效地控制病害的发生。
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