The definition of operator homeomorphism mapping , together with its characterizations, is given in this paper.在算子开集理论中给出了算子同胚映射的概念, 得到了算子同胚映射的若干性质....
Objective : To study tissue chara ct eristics of Humulus lupulus, powder characteristics, physical and chemical characteristics.目的: 探讨忽布的组织构造 、 粉末特征及常见的理化特性....
温度计装有甲苯或酒精.Thermometers are filled with fluids such as toluene or alcohol.六亚甲基二异氰酸酯 ( HMDI ) 可用在预聚物中代替甲苯二异氰酸酯〔TDI〕.Hexamethylene diisocyanate ( HMDI ) may be used in prepolymer, in place of TDI.例如硝基甲苯的硝基二甲苯即表现正常或近于正常的图样....
There they test the airflow around their latest designs.他们在那里测试他们的最新设计(汽车)周围的气流.Aero - tuned rear spoiler: Reduces lift, creates vacuum to maximize airflow through helmet.航空调整后扰流板: 降低升降机, 创造真空气流,以最大限度地通过头盔.Suitable for m...