以磷系化合物为阻燃剂,采用共聚的方法形成规整的嵌段阻燃聚酯。
By using the phosphorus compounds as flame retardant, the regular block flame-retardant polyester was formed through copolymerization.
由于异氰酸酯基能与水发生反应,异氰酸酯系化合物不能与水系胶粘剂直接混合使用。
Just because isocyanate in the hardener could react with H2O, isocyanate compound could not be used by directly mixing with water-based adhesive.
此外,有利于形成芴系和硫芴系列化合物的咸水还原环境,同样也有利于萘系化合物的保存。
In addition, salt water reduction environment advantageous to the formation of fluorene series and sulfur fluories compounds is also advantageous to the preservation of naphthalene series compounds.
具体来说,他们就是在研究一种叫做“硫系化合物”的化学品,其成分包括氧、硫、砷、碲。
In particular, they are working on a group of chemicals called chalcogenides.
丙烯酸系化合物用于生产模塑结构对象和光学部分对象,珠宝饰物、黏着剂、涂料和纺织纤维。
Acrylic compounds are used to make molded structural and optical parts, jewelry, adhesives, coating compounds, and textile fibres.
在纤维素稀酸水解发酵制乙醇的过程中,由于弱酸、呋喃衍生物和苯系化合物对微生物的影响,乙醇的产量和产率都不高。
In hydrolysis of lignocellulosic materials, a lot of compounds which are inhibitory to microorganisms can be formed such as: weak acids, furan derivatives, and phenolic compounds.
硅杂六元环化合物在有机硅化学中是一类重要的小分子环系化合物, 广泛应用于有机化学, 金属有机化学以及材料化学等领域。
Six-membered silacycles are a class of important cyclic compounds in organosilicon chemistry, which have many applications in organic, organometallic, and polymer chemistry.
开发新型耐火材料的重点在于三元系形成的化合物。
Major point for developing new type refractories are chemical compounds made from ternary system elements.
综述了生物医用铁系单质、合金、化合物、 磁性微球和免疫磁性微球的制备方法、性能和应用,并对其进行了评述。
The progress in preparation and application of iron metal or its alloy nano-materials , iron compound nano-materials and iron composite nano- materials are reviewed.
阿司匹林:乙醯水杨酸的俗称,1899年发现的一种有机化合物。系水杨酸和醋酸的酯,会抑制前列腺素的生成。
Aspirin: Common name of acetylsalicylic acid, an organic compound introduced in 1899. The ester of salicylic acid and acetic acid, it inhibits production of prostaglandins in the body.
化合物(2)为新生物碱。化合物(4)和(7)系首次从夹竹桃科植物中获得。
Compound (2) is a new one, while compounds (4) and (7) are reported for the first time from the family Apocynaceae.
在所检出的含硫化合物中,有2种组分系首次发现。
Among the sulphur compounds identified, 2 components were found for the first time.
经历了太阳系的漫长历史,这些碳氢化合物在冥王星表面的厚度应该有几十米。
Over the age of the solar system, these molecules should accumulate so that now we'd expect to see tens of meters of the stuff on Pluto's surface.
这些成果包括酚类、有机硫化合物、有机酸、有机磷农药、苯系物、多组分有机污染物的分析测定。
These organic pollutants included phenol, organosulfur compound, organic acid, organophosphorus pesticide, substituted benzene and multi-component organic pollutants.
对灯笼红萝卜雄性不育系及其保持系不同个体发育过程中的碳水化合物含量、淀粉酶活性、可溶性蛋白质含量及游离脯氨酸含量进行研究。
The contents of carbohydrate, soluble protein, free proline and the amylase activity were studied in male sterile line and maintainer line in Denglonghong radish during different growth period.
导电纤维主要有4大类:金属系、碳黑系、导电型金属化合物、高分子导电材料。
Electrically conductive fibre can be classified into 4 types: metallic series, carbonized fibre, conductive metallic compound type and high molecular conductive material.
其可溶抽提物中的生物标志化合物分布特征与碳酸盐岩和蒸发岩系很相似。
The distributive characteristics of biomarkers in their soluble extracts are very similar to those in carbonate rocks and evaporite rocks series'.
探讨了某有机化合物在双基系推进剂吸收工艺中的作用机理,用一系列实验研究了此工艺助剂对推进剂燃烧性能的影响。
The action mechanism of an organic matter to double base system propellant was discussed in this paper. The effect of this matter to combustion performance was studied by a series of experiments.
它意味着这层膜化合物可能来自陨石或慧星。在太阳系形成初期当陨石或慧星与地球相撞时被送到了地球。
It is possible that such membranous compounds could have arrived on earth as stowaways on the meteorites or comets that pounded the planet during the early history of the solar system.
应用体外细胞培养和MTT比色法。研究大豆异黄酮类化合物金雀黄素和大豆黄酮对人乳腺癌细胞系体外增殖作用的影响。
The effects of genistein and daidzein on the proliferation of human breast cancer cell line in vitro were studied by cell culture and MTT colorimetric method.
在有机化合物中用于合成各种甲酸酯、吖啶类染料和甲酰胺系类医药中间体。
In organic compounds used in the synthesis of various formic acid esters, around acetamiprid dyes and armour amide department of such pharmaceutical intermediates.
结论煤焦油加工生产过程中产生的主要职业危害因素为苯系物、多环芳烃、。酚类化合物,以及生产过程中使用的煤气中的一氧化碳等。
Conclusions in the coal tar processing, the harmful factors are the series of benzene, polycyclic aromatic hydrocarbon, phenolics and co which is used in the process of production.
结论煤焦油加工生产过程中产生的主要职业危害因素为苯系物、多环芳烃、。酚类化合物,以及生产过程中使用的煤气中的一氧化碳等。
Conclusions in the coal tar processing, the harmful factors are the series of benzene, polycyclic aromatic hydrocarbon, phenolics and co which is used in the process of production.
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