Overcrowding and poor sanitary conditions led to disease in the refugee camps.过度拥挤和恶劣的卫生状况导致难民营中出现疾病。Overcrowding imposes mental strains.过度拥挤使精神紧张.Overcrowding is so bad that prisoners have to sleep in shifts, while othe...
The fluorescence quenching of these emissive compounds in solution by halogen anions was studied carefully.研究了它们在溶液中的荧光被卤素离子猝灭的问题.Immediate quenching and tempering process of steel T 10 after low temperature salt bath ch...
表明笔石详细构造的物质是利用氢氟酸从石灰岩中侵蚀出来.Material illustrating detailed structure of graptolites has been etched from limestone by means of hydrofluoric acid.从而为笔石反射率的正确测定和取值奠定了基础.These provide base for the correct measurement and val...