查询词典 rosin

Similarly, the wide scale use of rosin, would be expected to cause a high incidence of sensitisation in the general public which is apparently not the case.

同样，松香大规模使用，将预计会导致公众的显然不是这样一个敏感化发病率高。

Application of natural products in slow/controlled-release fertilizes was reviewed. Rosin、humic acid、lignin、Vegetable oil and natural rubber applying in coaling fertilizer were indroduced emphatically.

摘要综述了国内外几种天然产物松香、腐殖酸、木质素、多聚糖、植物油、天然橡胶在缓／控释肥料中的应用情况，看重介绍了这几种天然产物在包膜肥料中的应用现状。

Antioxidant PS-10 with good decoloring effect to rosin and its reaction conditions were studied.

研究了对松香具有较好浅色效果的抗氧剂PS-10及其反应条件。

To study the relationship between the "tail" structure and the characteristics of Gemini surfactants, a new gemini surfactant CH(subscript 2s)-αω-Bis (dehydroabietyihydroxypropyltetramethylethyldiammonium Chloride) here s=2, has been synthesized. Dehydrogenated rosin as hydrophobic "tails" in the structure. The affections of reacttants ratio, reaction temperature and time on the yield of aimed compound have been discussed.

研究了Gemini表面活性剂中疏水&尾巴&结构对性质的影响，以脱氢松香酸和环氧氯丙烷为原料合成了中间体3-脱氢松香酰氧－2-羟丙基氯，再与四甲基乙二胺反应，得到1种以脱氢松香酰基为疏水链&尾巴&的对称Gemini型双季铵盐阳离子表面活性剂：二氯化－N，N'-二（3-脱氢松香酰氧－2-羟丙基）四甲基乙二胺。

To study the relationship between the hydrophobic "tail" structure and thecharacterizations of Gemini surfactants, a new gemini surfactant CsH2s-α,ω-bis(dehydroabietylhydroxypropylteteramethylethylammonium Chloride),here s=2, wassynthesized. Dehydrogenated rosin as hydrophobic "tails" in the structure. The impact factorsin the two steps are discussed.

为研究gemini表面活性剂中疏水&尾巴&结构对性质的影响，本论文以脱氢松香酸和环氧氯丙烷为原料合成了中间体3-脱氢松香酰氧-2-羟丙基氯，再与四甲基乙二胺反应，得到一种以脱氢松香酰基为疏水链&尾巴&的对称gemini型双季铵盐阳离子表面活性剂：二氯化-N，N′-二(3-脱氢松香酰氧-2-羟丙基)四甲基乙二胺。

From original rosin heat aggregated air entraining agent and naphthalene-based water reducer to high performance water reducer,the concrete admixture plays an important role in improving concrete durability and construction quality,and reducing cement and water quantity of concrete.

从最初的松香热聚物引气剂，20世纪七八十年代发展起来的萘系等减水剂，到以后的高效减水剂，在提高混凝土耐久性和施工质量，减少混凝土单方水泥用量和用水量方面起到了非常重要的作用。

The general ideas of this paper is to prepare polymercomposite emulsions of modified rosins and acrylates with mini-emulsion polymerizationmethod, and to discover the relations between their preparation, structure and properties, andfinally to provide theoretical basis to the deep utilization of rosin and to the development ofnew polymer materials from natural renewable resources.

论文的总体思路是采用细乳液聚合手段，创新开发改性松香／丙烯酸酯复合高分子乳液，并揭示其制备、结构和性能的关系，为松香的深加工利用以及用天然可再生资源开发高分子新材料提供理论依据。

The conventional method of sizing used soaped rosin and aluminum sulfate at acid condition , pH 4 to 5, which is so called acid sizing.

传统的施胶方法是利用皂化松香胶和硫酸铝在pH值为4～5的条件下进行的，即所谓的酸性施胶。

The paraffin has the performance to resist acetone and the banana oil,and also has excellent anti acid alkali performance;All of the gasoline, rosin water and ether have better dissolution effect,their dissolving speed is very fast in.

针对非原油生产中石蜡从使用对象及其表面清除的问题，通过测定石蜡在几种常见试剂中的失重率、清蜡速度和溶解度等，研究了石蜡的溶蚀特征，并采用红外吸收光谱对溶蚀产物进行分析，结果表明：石蜡对香蕉水、丙酮等具有较强的抵御能力，并具有优良的抗酸、碱腐蚀性能；汽油、松香水、乙醚等三种试剂对石蜡都有较好的溶蚀效果，其溶解速度在第一小时内最快，之后变慢，9h后逐渐达到饱和；它们的清蜡速度分别是1。

I went down the kitchen back stairs to my studio and picked up the violin, which sparkled with rosin dust

我从厨房后面的楼梯进入地下演奏室，拿起闪烁着松脂光泽的小提琴。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。