In fused-ring and bridge-ring compounds two carbons are common to the two rings.

He inserted the paper and two carbons.

他放入了那张纸和两张复写纸。

An outline of general position on active carbons from lignites is presented.

本文概略地介绍了褐煤制活性炭的情况.

These reactions can conserve three of every four carbons diverted to glycolate by forming triose.

这些反应能把四分之三的乙醇酸的碳保存在三碳糖中.

She typed an original and two carbons.

她用打字机打出了原件及两份副本.

Results showed that carbonyl compou nds , organic nitrates , HCOOH and CO, were formed.

结果表明,产物中主要有羰基化合物 、 硝酸酯或过氧硝酸酯、甲酸(HCOOH)及CO等.

Chlorotyrosine was not elevated in patients with high MPO or carbonyl levels.

MPO或蛋白质羰基升高的病人3-氯酪氨酸并不升高.

Pollution survey of 10 carbonyl compounds in air of 6 trains was conducted.

调查评价了6辆列车车厢空气中醛酮的污染状况.

Iron and nickel carbonyl compounds are poisons to copper-based methanol synthesis catalysts.

羰基铁和羰基镍是铜基合成甲醇催化剂的毒物.

Cyclopropane carbonyl chloride is an important intermediate.

环丙甲酰氯是一种重要的中间体.

Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group.

重点强调取代、消除反应和含羰基基团的化学性质.

The vibrant frequency of carbonyl is concerned with the force-constant and convert-mass of the carbonyl.

分子中具有红外活性的两个原子间的振动频率与化学键的力常数及折合质量有关.

Carbonyl compound in the products have positive relationship with air.

产品的羰基化合物与空气呈正关系.

The carbonyl molybdenum ( cobalt, nickel ) as catalysts used in polymerization is reviewed.

简述羰基钼 ( 钴 、 镍 ) 用于聚合反应中的催化剂.

Objective Comprehensive description of the toxicity metabolism and treatments of nickel carbonyl.

目的综述羰基镍的毒理、代谢和治疗.

The hydrogenation of diene compound and carbonyl group with yeasts was studied.

对几种酵母细胞催化双烯和羰基的加氢反应作了一些初步研究.

The surface lipids undergo oxidation, generating many compounds containing hydroxyl and carbonyl groups.

表面的类脂物氧化后, 产生许多化合物,包括羟基和羰基化合物.

Silver-coated carbonyl iron powder was prepared by using electroless plating method.

用化学镀法,甲醛为还原剂,制备镀银羰基铁粉.

Addition to carbonyls is one of the most important reactions in organic chemistry.

对羰基的加成作用是有机化学中最重要的反应之一.

Iron and nickel carbonyls can deactivate the copper-based catalyst for methanol synthesis.

羰基铁、羰基镍是导致铜基合成甲醇催化剂中毒的物质.

The grinding block made of carborundum abrasive, is very hard and sharp.

磨光机磨块采用金刚石磨料制成, 硬度极高,磨削锋利.