查询词典 fractionation

Coal tar pitch is a coal tar initial fractionation, the boiling point greater than 360 ℃ residues; wood tar wood tar pitch is the residue after distillation material.

煤焦油沥青是煤焦油初步分馏后，沸点大于360℃的残留物；木焦油沥青是木焦油蒸馏后的残留物。

Nutrients and feeding pressure of zooplankton affected the distribution of chlorophyll a and its size-fractionation.

营养盐分布和浮游动物的摄食压力影响了叶绿素a及其粒级结构的分布。

Taking Bendong and Xiqiu granitic bodies as an example, the thesis expounds geochemical characteristics of mantle-derived type granitoids in Sourthern China in REE and trace elements as follows: lower ∑REE, obvious fractionation of LREE and HREE, negative anomaly of Eu, relative higher ∑LREE/∑HREE,〓 and 〓 ratioes, rich in transitional elements and poor in large-ion lithophile and immobile elements compared with acidite means by Vinogradov. Original mantle-normalized distribution pattern of incompatible elements is one kind of rich -in-strongly incompatible elements type with enrich of K and loss of Sr, P, Ti and trace element association makes a feature of siderophile and chalcophile elements. The tectonomagmatic discriminating shows that mantle -derived granitoids in Southern China belong to orogenic granitoids formed in island arc/marginal sea basin system.

以本洞和西裘岩体为例，论文阐明了华南幔源型花岗岩稀土和微量元素地球化学特征，表现为稀土总量较低，轻重稀土元素分馏明显，负铕异常和∑LREE/∑HREE、〓、〓比值较高，与维氏酸性岩平均值相比华南幔源型花岗岩过渡族元素含量较高而大离子亲石元素和非活动性元素含量较低，不相容元素原始地幔标准化分配型式属强不相容元素富集型并呈K富集而Sr、P、Ti亏损的特点，微量元素组合以亲铁和亲铜元素为特征，构造岩浆判别显示华南幔源型花岗岩属造山花岗岩，其形成构造环境为岛弧/边缘海盆系统。

Comprehensive analyses of hydrocarbon pooling elements such as thermal evolution of source rocks, the time of pooling and the history of fracturing show that evaporate fractionation was induced by the Himalayan decompression through fractures and the invasion of large volume of allochthonous dry gas.

结合该区烃源岩热演化、油气成藏时间、断裂活动史等成藏要素的四维耦合性剖析，结论认为：喜山期断裂泄压作用以及大量他源干气的侵入诱发了该区蒸发分馏作用的产生。

The fractionation, viscosity and light-scattering measurements for three types of polystyrene, i.e., atactic, isotactic and 1:1 mixture of the two, were studied.

本文报导了有规立构聚苯乙烯，无规立构聚苯乙烯和1∶1混合有规和无规立构聚苯乙烯的分级、粘度和光散射测试结果。

The azeotropism -fractionation process for recovering formic acid from acid wastewater in cyclohexanol/ cyclohexanone production was studied,and the feasible kind and dosage of entrainment reagent for was determined.

采用共沸—分馏组合法从环己醇和环己酮生产装置产生的酸性废水中回收甲酸，确定了适宜挟带剂的种类及加入量。

ADH was pured 5.49 fold with a final yield of 48.09% by bacteriolytic solution crude extract,(NH4)2SO4 fractionation, sephadexG100 chromatography.

用4种不同的方法提取ADH，结果发现细菌裂解液提取法对Acetobacter Z127细胞的破碎率较高，而且能够维持较高的ADH活性，较适合Acetobacter Z127中ADH的提取。

Acid phosphatase from Branchiostoma beleheri was isolated and purified by ammonium sulfate fractionation,Sephadex G-75 gel filtration and CM-cellulose chromatography under acid condition.

从厦门文昌鱼Branchiostoma belcheri分离提纯酸性磷酯酶(EC3.1，3.2)，进一步经Sephadex G-75和羧甲基纤维素(CM-52)柱层析纯化，获得聚丙烯酰胺凝胶电泳单一纯酶制剂，比活力为351μm/min mg。

Methods Using means of collection, 20% and 40% saturated ammonium sulfate fractionation, SP-sephadex C 50 column chromatography and hydroxyapatite chromatography to purify papain from Carica papaya.

采用初步采集处理，20%，40%硫酸铵分级沉淀、SP-sephadex、C50柱色谱、羟基磷灰石柱色谱，从番木瓜乳汁中分离纯化木瓜蛋白酶。

By separating the crude oligosaccharide products with various ratios of activated charcoal and Celite, the results indicate that the products from 30% lactose (L30) had an adsorption percentage of 96.3%, the highest one among all mixtures of activated charcoal and Celite. The following fractionation by eluting successively with 10% and 20% ethanol aqueous solutions gave an oligosaccharide yield of 13.5% and a purity of 97.9%.

合成的寡醣以不同比例活性炭和矽藻土吸附分离，结果发现30%乳糖组(L30)经单活性炭组吸附即有96.3 %的寡醣吸附力，是所有活性炭与矽藻土混合组别中最高者，再经10 %与20 %乙醇冲提画分后可得13.5 %的收率，其寡醣纯度更高达97.9 %。

It has to be computed by the host for the actual clock rate.

主控制器可以用来计算实际的时钟速率。

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