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- P tolyl phenyl acetate is synthesized with Benzeneacetic acid and p cresol under presence of 4 dimethylaminopyridine(DMAP) and dicyclohexylcarbodiimide(DCC) at room temperature. 苯乙酸和对甲酚在二环己基碳二酰亚胺(DCC)存在下,用4-二甲氨基吡啶(DMAP)作催化剂合成苯乙酸对甲苯酯,反应时间短,反应条件温和,后处理容易,产率
- P tolyl phenyl acetate is synthesized with Benzeneacetic acid and p cresol under presence of 4 dimethylaminopyridine(DMAP) and dicyclohexylcarbodiimide(DCC) at room temperature.The yield is 91 6%? 苯乙酸和对甲酚在二环己基碳二酰亚胺(DCC)存在下,用4-二甲氨基吡啶(DMAP)作催化剂合成苯乙酸对甲苯酯,反应时间短,反应条件温和,后处理容易,产率高
- I mind my p's and q's whenever I see him. 每当我见到他我都谨慎行事。
- In English, b, p, m and w are bilabials. 英语中的b、p、m、w为双唇音。
- AB and CD intersect at (the point) P. AB线和CD线在P点相交。
- The time now is 10:00 p, m, sharp. 现在的时间是晚上10点整。
- Of, relating to, derived from, or containing boron. 硼的硼的、与硼有关的、来源于硼的或含硼的
- BDD electrode intermingled with boron. 硼掺杂金刚石薄膜电极
- A trademark used for an abrasive of boron nitride granules. 氮化硼用于一种由氮化硼微粒组成的磨料的商标
- The "d" in "grandpa" has been lost by assimilation to "p". "grandpa"中的"d"因受"p"的同化而不发音。
- It reacts violently with oxygen difluoride and barium peroxide. 一氧化碳同氟化氧、氧化钡会发生剧烈反应。
- Especially indicated for glazes which contain lead and boron. 尤其适用于含铅、含硼的釉药。
- The light now shining on P is called incident ray. 射到P点的光叫做入射光线。
- A trademarkused for an abrasive of boron nitride granules. 氮化硼用于一种由氮化硼微粒组成的磨料的商标。
- Biological Effects of Foliage Spraying Boron on Pisum Sativum L. 叶面施锰对豌豆生物效应的影响。
- Biological effects of foliage spraying boron on Vicia Faba L. 叶面施硼对蚕豆生物效应的影响。
- Boron deficiency could causespring wheat did not seed. 缺硼导致小麦不结实。
- The children were told to mind their P's and Q's. 孩子们被嘱应小心谨慎。
- Indium,boron and gallium are used in making solar cells. 铟,镓,硼,应用到太阳能电池中。
- She has at last come into her own as p pop-singer. 她终于使自己成为一名流行歌曲演唱家。