查询词典 solvent

At present, the solvent in the plastic gravure printing ink which in common use is the poisonous toluene.

目前常用的塑料凹印油墨中使用的溶剂为有毒的甲苯。

Greco Brothers is a leading manufacturer of aqueous and solvent-based industrial parts cleaning systems located in Providence, RI.

Greco Brothers是生产制造以水和溶剂为基体的工业部件清洗系统的领头人。

The effect of the molar ratio of guaiacol/methyl- nitrate ,the reaction temperature, the reaction time, the choices of nitrating agent and solvent in the synthesis of 5 -nitro-guaiacol has been studied.

本文研究了愈创木酚／硝酸甲酯的摩尔比、反应温度、反应时间，硝化剂和溶剂的选择对5——硝基愈创木酚合成的影响。

Using turpentine from pine gum itself as solvent,catalytic disproportionations of P.

以Pd/C为催化剂、马尾松和湿地松松脂为原料并利用其自身所含松节油作溶剂进行催化歧化反应制备歧化松香和对-伞花烃的研究。

The secondary structure, radius of gyration and solvent-accessible surface area of sGC-HNOX domain are not disturbed by the restraint hydrogen-bonding network.

RMSD分析结果表明，该氢键网络的存在可以有效地稳定sGC-HNOX结构域的构象，并且这种稳定作用不影响sGC-HNOX结构域的二级结构、体积以及溶剂可及表面积。

During the whole separation process, poisonous solvent was not used and poisonous hangover was avoided from headstream.

整个分离制备过程不使用有毒害作用的溶剂，从源头上消除了有毒残留物对产品的污染。

Therefore, the elimination of heptane would require replacement of ethyl acetate by a solvent in which 2 has a lower solubility.

因此，消除烷需更换乙酸乙酯溶剂中2具有低的溶解度。

Carbon hollow nanosphers were synthesized at 200oC, using magnesium and hexachloroethane as reactants, aluminum chloride as catalyst and benzene as solvent.

采用格氏试剂法，在温度200℃，反应时间12个小时下，以六氯乙烷为原料，苯为溶剂，铝作还原剂，无水氯化铝为路易斯酸。

In thepreparation of nickel sulfides, nanocrystalline NiS〓 was prepared by solvent-thermaltechnology. By adding a reductive atmosphere in the system, hexagonal phase NiS,which is a metaphase and stable at high temperature, was formed. TEM shows that theparticles are in nanorod shape.

在甲苯中合成了球形的NiS〓纳米粉，并通过还原气氛的调节制备出NiS亚稳相的纳米棒(1000x15nm)，通过前驱物的改变，我们在还原性气氛中还制备出Ni〓S〓纳米粉；同时我们在实验中还发现溶剂对产物的形貌有很大的影响，在乙二胺中作溶剂，分别得到立方形CoS〓和NiS〓及FeS〓纳米棒。

The effects of different factors on the laser-induced graft polymerization on the PET surface were analyzed, and the mechanisms were discussed. The factors were: 1 Monomers with smaller molecules resulted in better modification than polymeric monomers. Acrylamide monomer was chosen as hydrophilic modifier finally; 2 Higher concentration of the monomer solution favored the graft reaction; 3 With the increasing laser fluence, the surface hydrophilicity of PET films increased at first, then decreased. More laser pulses led to a more hydrophilic surface; 4 Benzophenone as a photosensitizer hindered the graft polymerization; 5 The homopolymer retardant of ammonium iron sulfate hexahydrate in a proper concentration retarded the formation of homopolymers and promotes the graft copolymerization; 6 The solvent of monomer solution also affected the graft reaction. Different solvents functioned in different ways. Ethanol can promote the graft reaction because of the activity of hydrogen in its structure; 7 pH value of the monomer solution affects the polymerization rate, and a lower pH value was favorable to the graft reaction.

这些影响因素的作用分别为：1小分子单体的表面改性效果好，确定以丙烯酰胺为亲水性改性单体；2较高的单体溶液浓度有利于接枝反应；3激光能量密度增大，薄膜表面亲水性先显著增强，后又减弱；激光脉冲次数越多，改性后表面亲水性越强；4光敏剂BP对PET表面接枝聚合反应有阻碍作用；5适当浓度的均聚物抑制剂六水合硫酸铁铵能减少单体均聚物的生成，促进接枝聚合；6单体溶液的溶剂也影响接枝聚合的反应进程，不同溶剂的影响作用原理不同，含较活泼氢的乙醇能促进接枝反应；7溶液pH值影响单体聚合速率，pH值较低有利于接枝反应。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。