家用冰箱的致冷剂,也经历循环过程.The refrigerant in a household refrigerator also undergoes a cyclic process.室温催熟,保存在冰箱的保鲜盒中.Ripen at room temperature and store in the regfrigerator crisper.用于冰箱的除臭与食品保鲜.Deodorize the air inside refriger...
通常的实验室光源选用汞弧灯.A common laboratory source of light is provided by a mercury arc.不很精确的射电干涉仪观测表明,这个源的角径约为1.5弧秒.Comparatively rudimentary interferometer observations suggested that this source is about 1.5 across.单个弧是不能求长的.T...