率

Their structures were confirmed by elemental analysis, 1H NMR, and IR spectral data. The preliminary bioassay results showed that α-phenyl-sul-fonylcyclododecanone oxime 2,4-dichlorophenoxy acetate (8p) had inhibition ratio 100% and 80.07% against Digitaria sanguinalis Scop., and 100% and 88.70% against Abutilon theophrasti Medic. at concentrations of 100 and 1 mg/L.

初步生物活性测定结果显示，部分化合物具有一定的除草活性，如α-苯磺酰基环十二酮肟-2，4-二氯苯氧乙酸酯(8p)在浓度为100和1 mg/L时对马唐的抑制率分别为100%和80.07%；对苘麻的抑制率分别为100%和88.70%。

The chloroform phase was isolated into 7 phases by column chromatograpathy, and the bioassy showed that the 1 phase has strong inhibitory effect, was 91.01% on Abutilon theophrasti M., root length, 51.35%、63.93%on Echinochloa crusgalli L, seedling length and root length, and the Amaranthus retroflexux L.,germination rate is 0, the secondly was 2 phase and 5 phas, and next we continued iaolated these two phases.

用硅胶柱对氯仿组分进行分离得到7个组分，生物测定表明组分1化感作用最强，对苘麻根长抑制率为91.01%，对稗草芽长和根长的抑制率分别为51.35%、63.93%，反枝苋的发芽率为0；其次是组分2和组分5，由于组分2的含量相对较少，对组分1和组分5继续分离。

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。

B in the case of each acceptance, to pay you at your office, on demand, the equivalent of the acceptance in the legal tender of the United States of America at the current rate of exchange for demand drafts on the place of payment, if payment is made by us in time to reach the place of payment in the course of mails not later than the date of maturity, or at the current rate of Los Angeles for cable transfers at time of transmission to the place of payment in the currency in which the acceptance is payable, if such payment is made at your office on the maturity date.

就承兑汇票，在贵行依美国法定的偿付方式，按汇票支付地的即期汇票汇兑率(如我方偿付时，邮寄钱款到支付地而不得误期)，或按电汇汇寄汇票的规定货币到支付地洛杉矶时的现行汇兑率(如我方是在到期之日在贵行进行偿付)即期向贵行偿付等同于汇票面额的款额。如在相关时间，洛杉矾没有以上

The paper introduces the main formats of online ad, taking CTR and CR for reference, and then discusses the proportion of effective accepter of online ad with the Effective Arrival Rate.

文中介绍了网络广告的主要形式，借鉴点击率和转化率，提出利用有效到达率来探讨网络广告真正到达有效受众的比率。

And their specific gravity is near to water,and they can provide habitat to accrete and grow for microorganism in the Moving Bed Biofilm Reactor Process.

研究表明，在复合式生物反应器中加入不同活性炭质量分数的两种活性PVF泡沫填料处理模拟生活污水，其COD的去除率在95%以上，氨氮的去除率为80%左右。

The loss of the diesel soot and smoke Cha Cha PAHs in the leaching rate of the most important factor is the length of brewing time;PAHs were detected in the loop on the small number of PAHs,5 of the ring PAHs were only in the low level of test,and the experiment detected no PAHs, detected no 6 of the ring,regardless of diesel smoke or soot Cha Cha,the concentration of PAHs has the highest concentration of dihydrogen Acenaphthene;On the influence of the number of brewing tea,the total concentration and the leaching rate of PAHs in the soot and smoke Chai tea are lower than on the influence of the brewing time and temperature.

其中影响煤烟茶和柴烟茶中PAHs浸出率的最主要因素都是冲泡时间的长短；检测出的PAHs都集中在环数较少的PAH，5环的PAHs仅在较少的试验水平中检出，无6环的PAHs检出，无论煤烟还是柴烟茶中PAHs的浓度都以二氢苊的最高；在冲泡次数影响下，煤烟茶、柴烟茶中PAHs的总浓度和总浸出率，比在冲泡时间和温度影响下要低。

Taking loquat as material, the enzymatic hydrolysis technology was used to improve the juice yield. Using screening superior acetobacter for the fermention of loquat wine and the Loquat vinegar acetification technique with carrier adsorption, the acid-producing rate could reach more than 85%, combinedwith the technique of nonthermal removal bacteria and the technique of rapid artificial vinegar aging, the quantity of Loquat vinegar was improved.

以枇杷为原料，采取酶解技术提高出汁率；以筛选的适宜菌株进行枇杷的酒化及采用固定化高活力醋化，乙酸得率可达85%以上，结合使用非热除菌保藏、快速人工催陈技术，提高枇杷果醋的品质。

It is noted that the energy of MLCT excited state can be systematically tuned simply by introducing ancillary acetylide ligand.

其中以脂肪炔为辅助配体的络合物tt6～tt7发光量子产率高达0.30以上，发光寿命长达12μs，这是迄今为止，文献报道室温溶液中发光寿命最长、量子产率最高的三联吡啶Pt络合物。

Then, acid precipitation method and chilled alcohol precipitation method were applied to extract sericin.

采用酸析法和低温乙醇沉淀法对粗粉末中的丝胶进行提取，结果表明：低温乙醇沉淀法的提取率较高，采用体积分数为75%的乙醇溶液提取率达到64%。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐