She taught me to do the weeding.她教我除草。The more ploughing and weeding, the better the crop.一分耕耘, 一分收获.When you're weeding , you must dig up the roots.斩草必须除根....
柔度系数是挠曲影响系数的一种特殊类型.A compliance coefficient is a particular kind of flexibility - influence coefficient.但是, 在重载作用下,轴会发生过度挠曲.Howerer, under heavy load the shaft may deflect excessively.区别尖锐的挠曲和断层更加困难.A still more difficul...
几个世纪以来，缝被子和做布拼一直是许多人都会做的针线活儿。For centuries, quilting and patchwork have been popular needlecrafts.然后又低下头,继续缝被子.Then she bowed her head and continued to sew the quilt.一天, 妈妈在缝被子.One day, my mother was sewing a quilt....
Molecular sieving effect of the ACF based PAN was found during adsorption.在吸附时,PAN基ACF呈现出明显的分子筛效应.She is sieving the rice in order to sieve out the stones.她正在把米过筛,好把石头筛出.By preassigned credibility and precision, effectiv...