查询词典 compound substance

The compound of active substance after micro encapsulation treatment can be dissolved in organic solvent and its pH value is near to 6. The jointing properties of the flux made by it are perfect and the IMC is thin and transparent.

微胶囊化后的复配活性物质易溶于有机溶剂，pH值接近6以其制备的助焊剂的助焊效果良好，IMC层薄而明晰。

The results showed that the light-colored compound conductive powder exhibit hoariness of the colour , resistant rate to 35.cm , small crystallite sizes about 0.04 mm ,the electric substance of wrap sizes about nanometer and posses the nice disperse and stability .

2得到的浅色复合导电粉末外观颜色为浅灰白，平均粒径小于0.04mm，电阻率低，可达35Ω。cm左右；包覆的导电物质分布均匀、颗粒细小、为纳米级晶粒；分散性和稳定性也比较好。

Compound 1 was first isolated as a natural substance, and compounds 2-6 were isolated from nidus vespae for the first time.

化合物1为首次分离得到的天然产物，化合物2~6均为首次从蜂房中分离得到。

Resin: Any natural or synthetic organic compound consisting of a noncrystalline solid or viscous liquid substance or mixture.

树脂：由非晶态固体或黏稠液体或它们的混合物组成的合成有机化合物的统称。

The solid-phase labeling method for the substance that can form organomercury compound is discussed.

本文还对其它能生成有机汞化合物的固相标记法进行了讨论。

The red substance deposited in phellem cell wall of the roots was proved to be noncrystall organic inorganic complicated compound.

病根周皮木栓层细胞壁积聚的红色物质为Fe、Al等元素组成的非晶态有机无机复合物。

To an asymmetric synthesis of (1), we applied a type of Roush addition in the first step to introduce the C4 stereocenter, and then the chair substance -122 are readily transformed into the title compound -aphanorphine using the same route as to the racemic target molecular.

aphanorphine分子的不对称合成是在第一步通过对甲氧基苯乙醛（119）发生Roush反应引入手性，得到手性高烯丙醇-122，然后利用与合成外消旋目标分子相同的方法，光学纯化合物-122经一系列转化可得到光学纯中间体化合物139；化合物139发生分子内傅—克反应的过程中，由C4位手性立体特异地控制C1位手性的生成，从而解决-aphanorphine分子中的手性问题。

A crystalline compound,C15H10O2,the parent substance of a number of important yellow pigments,occurring on the leaves or in the stems and seed capsule s of many primroses.

黄酮一种存在于各种樱草的叶子或茎以及种囊中的晶状粉末，C15H10O2，是许多重要黄色颜料的原料

Objective To study antioxidation ofDi-(3β-hydroxyandrost-5-en-17-one) ester, a new compound which was structure derivated from active substance from Asterias amurensis.

目的 以兔和大鼠心肌及肝组织匀浆为材料，研究一种从多棘海盘车中提取得到的活性物质经结构改造和修饰得到的丁二酸二-（3β-羟基雄甾5-烯-17-酮）酯新化合物抗脂质过氧化作用。

Barbituric acid; its salts; its derivatives; their salts; any compound with any substance falling within

this item 巴比妥酸；其盐类；其衍生物；它们的盐类；含有任何属此项范围内的物质的化合物 PP-S1，S2，S3

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。