五种温度的世代存活率、发育速率及孵出的若虫总数均呈抛物线趋势。
文中分析了其发生原因、危害程度及发展趋势,并提出了综合治理建议。
1·The rate of generation survival and generation growth, and hatching nymphs in total mumber revealed in the tendence of a parabola.
五种温度的世代存活率、发育速率及孵出的若虫总数均呈抛物线趋势。
2·In the chapers that follows, the parameters of heat transfer are computed, the tendence of heat transfer about bi-directional solidification is obtained;
在下文,笔者通过热传输量变化的概算得出二维定向凝固的进行对热传输量的要求趋势(这对于制定工艺是有必要的);