6.Its ether extract contains Isopsoralen and Bergapten.
香豆素类应为五指毛桃的有效部位之一。
7.The selective oxidation of ethers by chromic reagent, peroxide, nitric acid, oxygen and ozonide, as well as the ethers anodic oxidation are particularly introduced.
主要介绍了铬(Ⅵ)类试剂,过氧物、硝、氧和臭氧等各类氧剂对选择性氧以及的阳极电氧研究状况。
8.ethers having at least 5 carbon atoms, preferably C 5-14 ethers, eg anisole and phenetol;
至少有5个碳原子,最好荤5-14,如苯甲和phenetol;
9.In this paper, the cedrol methyl ether was synthesized by sodamide method.
12.In stead of using butyl nitrite and absolute ethyl-ether as reagents,in an improved method,cupferron.
本文介绍了以亚硝酯代替亚硝丁酯,用氯苯代替无合成铜铁试剂的新工艺。
13.119.0 g of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.
119克环戊溴和19.4克镁在空气中或者四氢呋喃中加入环戊格林尼亚试剂作发生反应。
14.Under acid condition open chaining crown ether diaromatic aldehyde can react, and they will synthesize a compound of chaining crown ether diaromatic aldehyde thiosemi-carbazone kind.
摘要链状冠芳醛在性条件下与氨基硫脲反应,合成了链状冠芳醛缩氨硫脲类合物。
15.Siloxanes and silicones, di-Me, Me hydrogen, reaction products with polyethylene glycol monoacetate allyl ether and polyethylene-polypropylene glycol monoacetate allyl ether;
名称 甲基甲基氢(硅氧烷与聚硅氧烷)和聚醇单酯烯/(聚醇-聚醇)单酯烯的反应产物;
16.A large number of structures of benzene methyl and methylene groups but rare aralkyl ether linkage existed in the waste liquor.
两种废液木素中都含有大量的苯环及甲基、亚甲基结构,几乎不存在烷基芳基键结构;
17.Foundry polyurethane binder comprises component Ⅰ, a polyhydroxy component whose main component is benzylic ether phenolic resin, component Ⅱ, a polyisocyanate, and a catalyst.
铸造用的聚氨酯粘合剂主要有两组份构成,组份Ⅰ为多羟基合物,如苯型酚醛树脂为主要成份;
18.Benzylic ether phenolic resin is one of the main components of foundry polyurethane binder; its structure and preparation condition determine the performances of polyurethane binder.
苯型酚醛树脂是铸造用聚氨酯粘合剂的主要成份之一,它的结构及合成工艺条件决定了该类粘合剂性能。
19.In this paper,a type of kilomega bps chips group for ether net which surpasses the standards by large abundance is presented.
介绍了一种性能超越规范很宽裕量的千兆位以太网芯片组。
20.Coverer: Seamless sheath of ether-based urethane resistant to cathodic, hydraulic and other environmental conditions.