松香的

I hope this review and update will assist the committee in coming to a conclusion regarding the classification and labelling of rosin.

我希望这次检讨和更新将有助于未来的结论，该委员会的分类和松香标签。

I understand that rosin will shortly be back on the agenda of the Working Group on the classification and labelling of dangerous substances.

据我所知，松香将很快回到了关于分类工作组的议程和危险物质的标签。

And tannin that can be extracted from it are sought by the chemical industry.

从中提取的松香和鞣酸化学工业上是很需要的。

The risin and tannin that can be extracted from it are sought by the chemical industry.

从中提取的松香和鞣酸是化学工业上很需要的。

What really does matter is that we've taken delivery of certain raw materials--rubber, umbrella-rrames, electrical goods, turps and sulphuric acid-which come to over seventy thousand dollars altogether

要紧的还是新进的那些货，橡胶，伞骨，电料，松香，硫酸，这一类总共得七万多块钱。

Conjugated unsaturation of abietic resin acids can be removed through catalytic hydrogenation to overcome the shortcomings of oxidation and color degradation in rosin.

将松香催化加氢可去除枞酸型树脂酸的共轭不饱和性，克服其易于氧化变色的缺点。

This paper synthesizes the Cu(superscript 2+) schiff base complex of disproportionated rosin amine, and catalyzes urushiol oxypolymerization to polymer.

研究了歧化松香胺席夫碱－铜配合物的合成及其对漆酚氧化聚合反应的催化性能。

Rational reaction condition is that ratio of the Cu(superscript 2+) schiff base complex of disproportionated rosin amine is 3%, urushiol concentration is 68.8 g/L, the system of reaction reacts 36 h at 30℃ in alcohol dissolvent.

结果表明，氧化聚合反应的理想条件是以乙醇为溶剂，加入3%歧化松香胺席夫碱－铜配合物催化剂，漆酚浓度为0.0688g/ml，在30℃下反应36h后，漆酚聚合物的沉淀得率为51.3%。

Abietic acid was isolated from pine rosin in South China and its structure was identified bythe spectra of UV, IR, NMR and MS.

松香酸中共轭双键的选择性氧化或加成反应是一项非常有意义且具有挑战性的研究。

On the leaving farmland, by surviving the seedling out rate, the feeding grass surviving rate, reviving rate, growth speed, tillering numbers, cluster measurement, degree of cover, root measurement, root Weight, fresh grass yield and hay yield, and so on, four kinds of feeding grasses which were Medicago sativa L., Dactylis glomerata L., Cichorium intybus L., Astragalus adsurgens Pall., were confirmed that can adapt the native ecosystem term and acquire good economic benefits in that year ; Bromus inermis Leyss. growed slowly in the first year, but Behaved well in the next year; Silpniumperfoliatum L.

弃耕地上通过对牧草出苗率、存活率、来年返青率、株高、分枝分蘖数、丛幅、根幅、根量、鲜草产量及干鲜比等的量测，确定苜蓿王、沙打旺、菊苣、鸭茅这四种牧草能适宜当地生态条件并于当年获得好的产量；无芒雀麦第一年生长较慢，但第二年表现良好；串叶松香目前为止表现不佳，能否引进成功有待观察。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。