NOTES ON BEROSUS LEACH IN CHINA WITH FOUR NEW SPECIES ( COLEOPTERA: HYDROPILIDAE )我国刺鞘牙甲属四新种 ( 鞘翅目: 牙甲科 )Liquid water can leach soluble materials from the interface.液态水能够从界面溶解出可溶性物质.Nitrates leach from the soil into rive...
大气中含有70%以上的氮气.The atmosphere consist of more than 70 % of nitrogen.这只是对威尔逊氮气云室的一种改进.It was an adaptation of Wilson's cloud chamber, filled with nitrogen gas.采气管得用氮气吹扫.Sample gas tubes are flushed with nitrogen....