Bed material samplers, as first developed , may be divided into three types.最初的河床质取样器有三种类型.In this paper the performance of two kinds of samplers sintered metal filter is evaluated.本文介绍温、湿度变化对两种改进型被动式活性炭累积氡采样器吸附性能的影响....
With their fleece sopping wet, they huddled in hollows, too dispirited to graze.在皮毛打湿的情况下, 他们挤在低洼处,靠近黑莓丛,或者躲在背风坡上, 毫无觅食的情绪.Michelle will also spin a customer's wool fleece to specification at a cost of $2.25 an ounc...
I felt it was a grotesque intrusion into our lives.我感觉那是对我们生活的一种干扰，让人感到荒唐可气。a grotesque distortion of the truth对事实的荒诞歪曲She has become a grotesque parody of her former elegant self.她成为了以前那个举止优雅的自己的怪诞模仿品....
His rent payment is overdue.他的房租过期未付.This debate is long overdue...这场辩论早该进行了。I'll go home and pay an overdue visit to my mother.我将回家看望母亲，其实我早该回去了。Teachers have joined a strike aimed at forcing the government to pay ...
杂原子数越多, 分子被氧化的程度越高.The larger the number of heteroatoms, the more highly oxidized the molecule.关键反应为底物控制的不对称杂原子共轭加成反应.The key step was a substrate controlled asymmetric heteroatom conjugated addition.杂原子烯反应是该反应的重要组成部分.Th...