松脂

Because three differences lie in the pearlite to have the round arc crack which the condensation forms, calls the pearlite structure, the water content 2~6%; The pitchstone has the unique resinous luster, the water content 6~10%; The black sunlight crag has the glassy luster and the conchoidal fracture, the water content is smaller than 2% generally.

三者的区别在于珍珠岩具有因冷凝作用形成的圆弧形裂纹，称珍珠岩结构，含水量2~6%；松脂岩具有独特的松脂光泽，含水量6~10%；黑曜岩具有玻璃光泽与贝壳状断口，含水量一般小于2%。

Semifluid mixtures of organic compounds consisting of resins dissolved in a volatile oil, turpentines can be distilled into the volatile oil of turpentine and the nonvolatile rosin.

它是半流质的有机化合物，由树脂在挥发性油中溶解而成，松脂可以被提炼成松脂挥发油和非挥发性松脂。

Semifluid mixtures of organic compounds consisting of resins dissolved in a volatile oil, turpentines can be distilled into the volatile oil of turpentine and the non volatile rosin.

它是半流质的有机化合物，由树脂在挥发性油中溶解而成，松脂可以被提炼成松脂挥发油和非挥发性松脂。

Semifluid mixtures of organic compounds consisting of resin s dissolved in a volatile oil, turpentines can be distilled into the volatile oil of turpentine and the nonvolatile rosin.

它是半流质的有机化合物，由树脂在挥发性油中溶解而成，松脂可以被提炼成松脂挥发油和非挥发性松脂。

Semifluid mixtures of organic compounds consisting of resins dissolve d in a volatile oil, turpentines can be distilled into the volatile oil of turpentine and the nonvolatile rosin.

它是半流质的有机化合物，由树脂在挥发性油中溶解而成，松脂可以被提炼成松脂挥发油和非挥发性松脂。

It is an organic substance and is a petrified rosin of ancient trees related to rosin.

一种有机物质。它是一种含一些有关松脂的古代树木的石化松脂。

The research situation of waste water treatment of gum rosin process ing at home and abroad was generally summarized.

概述了国内外对松脂加工废水治理的研究情况，系统分析了松脂加工废水的来源及特点，介绍松脂加工废水治理方面的成功方法和经验，通过分析生产过程的监控数据，为我国松香行业的污水处理提供了经验和依据。

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

The law of thermo isomeric changes of the pimaric,ellioti pimaric, levopimaric,longifolic,dehydropimaric,abietic and neoabietic acids in the oleoresin of Pinus elliottii were studied in a comparison with those of resin acids in the oleoresin of Pinus massoniana .

本文研究湿地松松脂中海松酸、湿地松酸、左旋海松酸、长叶松酸、去氢枞酸、枞酸、新枞酸受热异构变化规律，并与马尾松松脂中的树脂酸热异构变化进行对比，为湿地松松脂的生产提供理论依据。

The combined acids , LHZZS,XDZZS and SLZZS, one of four fractions in montan resins from montan waxes from Liaohu, Xundian and Shulan brown coal respectively, were derived by CH 2N 2 to methyl esters and their chemical constituents and structural characteristic were studied on GC-MS.

结果显示，树脂结合酸均以正构烷酸为主要成份，其分布为C1 2 ～C2 8，高含量的正构烷酸集中在低碳数一端，C2 0 含量最高，其次为C1 6 ，而舒兰结合酸中，正构烷酸占绝对优势，且C1 6 为最高含量的化合物；去氢松香酸在每一个样品中含量较低，其它三环二萜酸，如松脂酸、三达松脂酸等异构体或立体异构体含量也非常低；具有五环三萜骨架的酸性物质，在潦浒、舒兰结合酸中比较丰富，其含量超过寻甸结合酸；在低碳数一端，存在着各种支链烷酸及苯甲酸、苯酚及取代物。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。