particle n. 1.颗粒,微粒;微量,极少量。 2.【物、数】粒子,质点。 3.【语法】虚词,不变词〔冠词、副词、介词、连接词、感叹词等〕;小品词 〔yes, no 等〕,词缀。 4.〔古语〕(文件中的)条,项。 5.【天主教】一小片圣饼。 He has not a particle of sense. 他一点脑子也没有。 fundamental [elementary] particles 【物理学】基本质点,基本粒子。
Full - flow lubricating oil filters for internal combustion engines - methods of test for initial particle retention efficiency , life and cumulative efficiency gravimetric method 内燃机满液流式润滑油过滤器.初始微粒滞留效率寿命和累积效率试验方法
Methods of test for full - flow lubricating oil filters for internal combustion engines - part 4 : initial particle retention efficiency , life and cumulative efficiency gravimetric method 内燃机全流式机油滤清器试验方法第4部分:原始滤清效率寿命和累积效率重量法
The relative momentum of two final particles and the cross section are zero at the threshold energy for an endothermic reaction , while the relative momentum of two initial particles is zero and the cross section at the threshold energy for an exothermic reaction is infinite 在吸热反应的阈能处,出射粒子的相对动量以及截面均为零。在放热反应的阈能处,入射粒子的相对动量为零,截面趋于无穷大。由于强子的动量仅提供如此低的质心系能量,强子物质中x 。
In this paper , urea particles and oil - vegetable seeds as initial particles are used to study granulation process in a vibrated fluidized bed , where the initial particles grow in a layered manner by spraying melt urea solution on them and reached the required granule size 本文以尿素或油菜籽颗粒为晶种,以不同浓度的尿素溶液为喷雾料浆,对振动流化床喷雾造粒特性进行了实验研究。实验在晶种上喷涂尿素熔融液或不同浓度的尿素溶液,使其以层式机理长大。
The pullulation of floes is a random process and it has nonlinear character . if the fragmentation of floes is not considered , the routine flocculation process is to form the small group from initial particle and the big group from small groups . finally the biggest group is formed from those big groups 由于絮凝体的成长是一个随机过程,具有非线性的特征,如果不考虑絮凝体破碎的话,常规的絮凝过程是由初始粒子结成小的集团,小的集团又结成大的集团,然后结成更大的集团,这样一步一步成长为粗大絮凝体。