The soil is depleted first by having crops grown in it and second by natural weathering and bacterial action.土壤首先是被种植其中的作物消耗掉，其次受自然风化和细菌活动的侵蚀。Organic rubbers develop a resinous surface crust through weathering.有机橡胶经过风蚀后,...
The effects of weathering can be simulated in the laboratory.在实验室里可以模拟各种天气产生的影响.This suggests that the optimum for biological weathering would be in a hot, moist climate.这表明生物风化最适宜的条件是湿热气候。The movement of water is also a...
This machine is a ~ of energy economization.这台机器是节约能源的样板.The design basign bases on the principle of precision, economization, security and reliability.设计中本着精确 、 经济 、 安全和可靠的设计原则....
去年8月，他召集自己最亲近的顾问在戴维营开会。Last August he convened a meeting of his closest advisers at Camp David.我不动声色地写, 默默享受着这小家伙亲近的情意.I worte on in silence, quietly enjoying the little thing's companionship.他是个不易亲近的人.He is an unap...
Is long afterbirth above the buttock how one and the same?屁股上面长胞是怎么一回事?Whether does afterbirth have cellular cycle?精细胞是否有细胞周期?In this Chinese in HongKong and Macow in old generation and sea afterbirth very influential.这在...