The structure of molecules can be seen under an electron microscope.分子的结构可在电子显微镜下观察到.An electron has a negative charge, a proton has a positive charge.电子带负电荷, 质子带正电荷.Freedom, gravity, ego, and electron are constructs.自由,...
酞酸二丁酯一般用来作为这类增塑剂.Dibutyl phthalate is commonly employed as such a plasticizer.填料包括改性剂, 填充剂, 增塑剂和低摩擦添加剂.Fillers include modifiers, extenders, plasticizer and low friction additives.性质优良的增塑剂能无限期地留在塑料内.A good quality plasti...
So it is significative to study the ICAD system of hammer forging dies for connection rods.因此,连杆锤锻模ICAD系统的研究就有了重要的意义.Bentwood furniture: Type of furniture made of wooden rods Bent into shape after heated with steam.曲木家具:...
Each mourner wore a black armband and a white paper chrysanthemum.每个吊唁的人都佩带着黑纱和一朵白纸菊花.The old man potted the chrysanthemum cuttings.老人把菊花的插枝种在花盆内.There are many species of chrysanthemum.菊花品种很多....