比色法涉及氟离子对预先形成的颜色的消色作用.The colorimetric methods involve the bleaching of a preformed color by the fluoride ion.用香草醛-冰醋酸比色法测定西洋参中总皂甙的含量.The content of ginsenoside in Panax quinquefolium L was determined by colorimetry.方法: ...
Formerly most of our household utensils were made of brass.以前我们家庭用的器皿多数是用黄铜做的.Some utensils were in a state of decay when they were unearthed.有些器皿在出土时已经残破.Pens and pencils are writing utensils.钢笔和铅笔是书写工具....
那整座房子是她技艺的一座丰碑。The whole house is a monument to her craftsmanship.它有如人类智慧的丰碑,巍然屹立,岿然不动.It rose as a monument to human ingenuity immovably firm.先辈们的丰碑最能奋勉人心的.The monuments of men's ancestors were the most impressive ...
The pictures were sensationalist and could seriously disturb younger readers.这些图片大肆渲染，会让一些比较年轻的读者们惶恐不安。She patted Mona, taking care not to disturb her costume.她轻轻拍了拍莫娜，小心翼翼地，生怕弄乱她的戏服。"I'm sorry to disturb you," Webb...
胚泡附着到子宫内膜.这一过程称为植入.The attachment of the blastocyst to the lining of the uterus.一些人认为破坏胚泡的行为可以以谋杀论处.Some people think that destroying blastocysts is murder.如果子宫内膜未为接受胚泡做好准备,结果也是如此.The same is true if the uterine lining i...
飞机编队飞行.The aircraft are flying in formation.这类操纵的例子包括编队飞行, 仪表飞行和着陆.Examples of this type of control include formation flying, instrument flight, and landing.在八架编队飞行的机群中,有三架被击落烧毁.Three out of a formation of eight were sho...
The longan repairs the brains, this type of beverage, be: Peerless beverage.龙眼补脑汁, 这一种饮料, 就是: 盖世无双的饮料.Conopomorpha sinensis Bradley is a main pest insect on litchi and longan.荔枝蒂蛀虫是荔枝和龙眼的重要害虫.Longan trees can be kept in ...