The reaction conditions on oxidation of 2 - methylpyridine to 2 - acid by oxidation of potassium dichromate were studied.研究了以2-甲基吡啶为原料,以重铬酸钾为氧化剂,利用化学氧化法合成 2- 吡啶甲酸的反应条件....
跟流行的观念不同, 其实巧克力和油腻食物不会导致斑疹的产生.Contrary to popular belief, chocolate and greasy food don't give you spots.内耳由脆弱的薄膜构成,它承载着密集的由被称作斑疹的非凡细胞构成的片.The ear is composed of delicate membranes which bear dense patches of specia...
They would not be likely to alight on the surface of the sea.它们大概不会降落于海面上.Martha looked up into a strange face and dark eyes alight with kindliness and concern.马撒慢慢抬起头,映入眼帘的是张陌生的脸,脸上有一双充满慈爱和关注的眼睛.His eye was alight, his ...
每块砖在色调、质地与大小上也都略有不同。Each brick also varies slightly in tone, texture and size.每种菜谱都具体规定了所用鸡蛋的大小。Each recipe specifies the size of egg to be used.我的花园只能算是中等大小。I would class my garden as medium in size....
She tucked up her skirt and waded into the river.她撩起裙子蹚水走进河里。Marty was terrific — he just waded into the skinheads without a thought.马蒂太棒了─他毫不含糊地揍了那些光头仔.The children waded out into the lake.孩子们一路蹚水到了湖里。The dusk began to ...