The material is readily prepared by reaction of formaldehyde and hydrazine.这种物质很容易由甲醛和肼反应而得到.Formaldehyde slowly inactivates many viruses.甲醛能慢慢使多种病毒失去活性.Sulfur dioxide and formaldehyde both produce irritation.二氧化硫和甲醛都可产生...
The carbon microfiltration membranes were prepared by pyrolysis of a home - made thermosetting phenol - formaldehyde ( PF ) resin .实验合成了球形热固性 酚醛树脂 微粒,并以此为原料制备了微滤炭膜.The preparation and property of urea - formaldehyde resi...
They used axes to clear a path through the forest.他们用斧子开辟出一条穿过森林的小道.They equipped themselves with a pair of sharp axes and set off for the forest.他们带上两把利斧便朝森林走去.This choice of axes simplifies the analysis of the particul...
我会打补丁，缝纽扣。I know how to darn, and how to sew a button on.她一针一针地缝那块粗布。She passed the needle through the rough cloth, back and forth.每条连衣裙都缝上了褶边，并经过严格的检查，不允许有任何瑕疵。Each dress is hemmed and scrupulously checked for imperfect...
I'm terribly squeamish. I can't bear gory films.我非常容易受到惊吓。我受不了暴力血腥的电影。Spare me the gory details.别给我讲那些骇人听闻的细节了。the gory task of the pathologist病理学家带有血腥味的工作...
In micrographics, a device that enlarges microimages for viewing.在缩微照相技术中, 放大图形以便观察的一种设备.She disapproved of her son's indiscriminate television viewing.她不赞成儿子不加选择地收看电视.After viewing this PNG , you notice them ( mill...
Matilda was embroidering an altar cloth covered with flowers and birds.玛蒂尔达在一块有花鸟图案的祭坛布上刺绣。He always had a way of embroidering.他总爱添油加醋.Zhao Junxin learned the craft of embroidering from his grandmother.赵俊信从奶奶那里学到了刺绣的手艺....
从他的咀里奔泻而出的激动话语,几乎难以听清.He would hardly articulate the words that tumbled passionately from his lips.他咀咒着,额头上都沁出了汗水.He swore and the sweat stood out on his forehead.洛德默不作声, 怒火中烧,恶狠狠地咀咒着亚米诺医生.With silent, seething anger, Lo...