The inner asteroid belt be a virtual twin to the belt in our solar system.事实上,内部的那个小行星带跟我们地球的小行星带犹如双胞胎一般,极为相似.There is an asteroid on a collision course with the Earth.有一颗小行星可能会与地球发生碰撞。The Geminides originate from myster...
Staples such as bread, rice and tea are already being rationed.面包、大米和茶叶等日常必需品已实行配给。Motorists will be rationed to thirty litres of petrol a month.汽车司机每月的油量将限定为30升。Many basic goods are now rationed. Less and less is availa...
中世纪的炼丹术士企图把贱金属炼成金.Medieval alchemists attempted to transmute base metals into gold.占星学和炼丹术为神秘之学.Astrology and alchemy are occult sciences.炼丹术, 虽然是一种科学,科学与所有有法律,必须遵循.Alchemy, though, is a science and with all sciences the...
The flowing state in narrow annuli changes apparently quicker than that in circular tube.窄环隙流道内流态由层流向紊流转变明显提前.The velocity profile should be confirmed when non - Newtonian fluid flowing in duct and annuli is researched.在...