强取

It,s allelchemicals were isolated through extraction, thin-layer chromatography, and column chromatograpathy. After the white clover was infused in ethanol and evaporation, the leavings was dissolved by water. The aqueous extract was extracted by petroleum,chloroform, ethyl acetate and n-Butanol successively, and the bioassay showed that the chloroform phase has obvious inhibitory effect, the inhibitory rate was 44.32%,88.08% on Abutilon theophrasti M., seedling length and root length, 82.08%,92.16% on Echinochloa crusgalli L., seedling length and root length, and the Amaranthus retroflexux L., germination rate is 0, the secondly was ethyl acetate phase.

运用萃取、薄层层析、柱层析等方法对白三叶草地上部分的化感物质进行初步分离，结果表明，白三叶草经乙醇浸提旋转蒸发后用蒸馏水溶解，依次用石油醚、氯仿、乙酸乙酯、正丁醇萃取，生物测定表明氯仿组分对杂草的抑制作用最强，对苘麻芽长和根长抑制率分别为44.32%、88.08%，对稗草芽长和根长的抑制率分别为82.08%、92.16%，反枝苋的发芽率为0；其次是乙酸乙酯相。

And Bauhinia purpurea could inhibit vibrio. And the extracts, extrated with petroleum ether from leaves of Melia azedarach L. and Bauhinia purpurea can inhibit Vibrio parahaemolyticus, too. The remainder extracts of Mangifera indica Linn.showed strong inhibition effect on Vibrio tubiashii. While the extracts of Eriobotrya japonica showed no inhibition effect.

结果 夹竹桃叶、芒果叶、苦楝叶和羊蹄甲叶4种中草药乙酸乙酯萃取部分对供试弧菌有很好的抑菌作用；苦楝叶和羊蹄甲叶石油醚萃取部分对副溶血弧菌有抑菌作用；芒果叶的水溶性部分对塔氏弧菌有很强的抑菌作用；枇杷叶提取物对4株弧菌均无抑制作用。

The composite extractant used has strong dissolving detachability on oxidation products of the organic sulfur and can remove composite extractant left in fat phases so as to improve the yield of the diesel fuel.

所用的复合萃取剂对有机硫化物的氧化产物有很强的溶解脱除性，可以除去遗留在油相中的复合萃取剂，提高柴油收率。

A strong limit theorem on gambling strategy for Bernoulli sequences is extended to the sequences of arbitrary dependent random variables which take numberable values by using the conditional moment generating function .

利用条件矩母函数将关于Bernoulli序列赌博策略的一个强极限定理推广到取可列值的任意相依随机变量序列的情况，并且通过允许选择函数在一个区间中取值，推广了随机选择的概念。

Good callus with high regeneration frequency can be obtained when scutellum of embryo at 25 days after pollination were used as expla...

最佳取材时间在开花后 15d左右，而对于在开花后 2 5d取的大龄胚，若仅挑取盾片组织进行接种，也可以获得质量较高和再生能力较强的愈伤组织

A method for the simultaneous determination of arsanilic,nitarsone and roxarsone in animal feed was developed by anion solid-phase extraction and high performance liquid chromatography.

采用强阴离子固相萃取柱净化样品，建立了固相萃取/高效液相色谱法同时测定饲料中的阿散酸、硝苯砷酸和洛克沙砷的分析方法。

The method of solid phase membrane extraction -gas chromatographic analysis for the determination of tetramine in urine and blood is briefly described.

研究了固相膜萃取-气相色谱测定尿液、血液中毒鼠强的方法。从沉积物中萃取腐植物是研究工作者遇到的第一个问题。

This, from our point of view, can be thought as a result of their being the essential exterior body parts, of their being apperceived as tools for actions, and of being their perceptual unsalience in positions.

手&转义具有极强的词义功能取象倾向，显示出单一功能取象倾向特征，这是由人们对&手&的工具功能的认知心理定式造成的。&

Using hydrotreated gas oil as solvent, under the conditions of a reaction temperature of 400 C, a hydrogen partial pressure of 10 MPa and a reaction time of 1 h, a portion of coke deposits could be removed yet without the function of hydrogenating coke.

采用溶剂萃取法除去工业失活催化剂上沉积的焦炭和金属的研究结果表明，用四氢呋喃、吡啶和喹啉这3种含杂原子的有机强溶剂常温萃取催化剂，其去除焦炭能力很弱，而且会因这些溶剂的强吸附作用污染催化剂；盐酸洗涤能有效去除催化剂表面的钙、铁沉积层，但不能去除焦炭；低芳香性的加氢瓦斯油在400 C、H2压力为10MPa、反应1h的条件下可部分去除催化剂上的焦炭，但不具备强的氢化焦炭作用；1，2，3，4-四氢化萘因具有供给原子氢的能力，可以有效地氢化和去除催化剂上的焦炭。

The results show that BODMAC has good ability to extract gold from chloride, the composition of extraction species is BODMA·AuCl〓 The influence of NaCl concentration on distribution coefficient of gold is different from that of uranium .

结果发现，BODMAC从氯化物中萃取金的能力很强，通过紫外光谱和红外光谱确定了其萃合物的组成为BODMA·AuCl〓的离子缔合物，计算了其萃取反应的平衡常数为10〓。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。