Based on the indoor model tests and field blasting crater tests, the paper discussed the influence of single closed fissure upon fragmentation effect of blasting with single spherical charge.
本文在室内模型试验与现场爆破漏斗试验基础上，着重论述了单个闭合状裂隙对单个球状药包爆破破碎效果的影响。
The field and laboratory tests are carried out to research the plugging effect of jacked prestressed concrete pipe pile under two different geological conditions.
对淤泥质黏土互层以及粉土两种土层条件下静压预应力混凝土管桩的土塞效应进行了试验研究。
After pot-cultivation, field and imitate-culturing tests, the effect of several kinds of organic material and the different amount of application on the activity of soil enzyme were analysed.
通过盆栽、田间及模拟培养试验，分析了几种有机物料及不同有机物料用量对土壤酶活性的影响。
Field tests of Zhejiang province and Jiangsu province have been confirmed that it has fine control effect for many insects of rice and cotton.
稻安磷乳油经浙江、江苏两省八个地区的应用，表明对水稻和棉花等作物的多种害虫均具有良好的防治效果。
Field tests of Zhejiang province and Jiangsu province have been confirmed that it has fine control effect for many insects of rice and cotton.
稻安磷乳油经浙江、江苏两省八个地区的应用，表明对水稻和棉花等作物的多种害虫均具有良好的防治效果。
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