DDTs and HCHs serum level were detected by EC - ECD .运用GC -ECD 方法检测血清中有机氯农药DDTs和HCHs水平.In DDTs the residual level of p, p?DDTs中p, p?The residual levels of DDTs, HCHs in soil were different with different utilization type...
Don’t invite her to the party. She’s so prim and proper.别请她去舞会，她太古板了。It was a strange conjunction—the prim serious young Queen and the elderly,cynical Whig.那是奇特的组合——古板严肃的年轻女王和上了年纪、玩世不恭的维新党成员相组合。We tend to imagine that th...
嵌芯辫带一种狭长的扁穗带或织物软线.A narrow flat braid or rounded cord of fabric used for trimming.干洗用含极少量水或不含水的化学溶剂清洁 ( 衣物或织物 )To clean ( clothing or fabrics ) with chemical solvents that have little or no water....
Claire positioned herself so as not to obstruct David's line of sight.克莱尔为了不挡住戴维的视线挪了一下位置。Flaming torches were positioned at intervals along the terrace.沿台阶每隔一段距离布置有燃烧着的火炬.The nails are positioned as desired.钉子被钉在适当...