Melted metal is poured into a mold to harden into shape.熔化之金属倒入模子中以冷却成形.Give the cardboard two or three coats of varnish to harden it.在纸板上涂两三层清漆使其变硬。The varnish takes a few hours to harden.清漆需要几个小时才能干透。Whilst Marc did gr...
例如出生人口性别比偏高、人口老龄化等.These problems include the high sex ratio and the growing population aging.使中国人口老龄化达到了前所未有的水平.China's population is aging at unprecedented levels.同样,山西省也面临着人口老龄化的巨大挑战.Shanxi province is also confr...
CENETIC AND SUBSPECIES DIVERGENCES WITHIN THE RED PANDA ( CARNIVORA: PROCYONIDAE )小熊猫种内遗传及亚种分化研究 ( 食肉目: 浣熊科 )Among tham , 7 species is belonged to Rodenria, and Carnivora, Chiroptera and Insectivora only have 1 species r...