selectivity的例句大全

Two-dimensional capillary electrophoresis, which combines two capillary columns with different separation mechanisms, can obviously enhance the peak capacity and conveniently adjust the selectivity.

二维毛细管电泳系统将两种分离机理不同的毛细管柱偶联，可以极大地提高系统的峰容量，便捷地调节分离选择性。

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Tyrosinase ( Tyr) catalyzes ortho-hydroxylation of monophenols to catechols ( phenolase activity) and oxidation of catechols into o-quinones ( catecholase activity) with high efficiency and selectivity under mild conditions.

酪氨酸酶在温和条件下能高效、高选择性实现单酚的邻位羟化（单酚酶活性）以及氧化邻二酚为邻二醌（儿茶酚酶活性）。

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Ammonium ceric nitrate is a reagent with good selectivity and multiple uses.

硝酸铈铵是一种选择性良好，具有多方面用途的试剂。

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Weak gel profile controlling and oil-displacing agent has comparative good selectivity on permeability, it prefer to move into high osmotic large channels and those move into low osmotic channels are very little.

弱凝胶调驱剂具有较好的渗透率选择性，即优先进入高渗透的大孔道，进入低渗透部位者很少。

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Group U2 was of low selectivity and high solvency.

另一个是选择性较差、溶解性较好的高溶解性溶剂库，U2。

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Catalyst CDH has good selectivity and activity at the temperature of 240℃.

反应温度在240℃时,催化剂CDH有良好的选择性和较高的反应活性、稳定性.

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Accordingly , TiO _ 2-SiO 2 catalysts showed high selectivity to target products , DPO.

TiO_2主要以 Ti -O-Si键的形式存在,表现出更多的弱酸性,因而有利于DPO选择性的提高.

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TS-1 catalyst showed high selectivity of MPO and DPO during transesterification of DMO with phenol.

TS -1 在催化DPO合成反应中表现出良好的选择性,弱的L酸中心是DPO合成反应的活性中心.

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The method provides an effective approach for improving selectivity of IGA and exhibits practical prospect.

实验结果表明,该方法具有实际应用前景.

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The introduction of Ca 2 + or La 3 + increased the IBH conversion but decreased the MEK selectivity.

而Ca~(2+)、La~(3-)的引入,则使反应活性升高,甲乙酮选择性降低.

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A small quantity of acetone in feed material is advantageous to the increase of the catalyst activity, selectivity of MIBK and DIBK, but excess acetone will make against the synthesis reaction process.

反应物相中少量丙酮的存在有利于催化剂活性、MIBK和DIBK选择性的提高，但过量丙酮的存在对合成反应不利。

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Herbicidal effects of dcpa. NAC mixture and its selectivity on citrus fruits

敌稗、西维因混剂的除草效应及其对柑桔类果树的选择性

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Objective To investigate if a bacterial enhancer-like element ( BELE) in the upstream region of Escherichia coli gln Ap2 gene had strict promoter selectivity.

目的探讨大肠杆菌谷氨酰胺合成酶基因上游增强子样序列（BELE）有无严格的启动子选择性。

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Moreover, the thermal effect of wavelength selectivity of VBG is studied by experiment. Red shift of the output wavelength occurs with the increase of temperature of VBG.

此外，测量并分析了热效应对体光栅波长选择性的影响，体光栅吸收热量温度升高后，激光器的输出波长红移。

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In particular, the PDF and TLN have almost the same reaction mechanism but completely different metal ion selectivity for catalysis.

特别的是，这两种酶有几乎相同反应机理却有着完全不同的与反应活性相关的金属离子选择性。

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The method has better selectivity. It was used to determination of PMB in practical samples with satisfactory results.

且方法具有较好的选择性，用于药物、人血清和尿液中多粘菌素B含量的测定，取得了满意的结果。

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It was shown that many assisting-catalysts could improve the selectivity of the reaction, among which OVN was of the best, producing a product purity of> 99%, and a yield of> 95%.

结果表明，多种助催化剂均可提高催化加氢反应的选择性，其中以OVN效果最好，制得产品质量分数大于99%，收率可达95%。

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The LSX molecular sieves synthesized has a high selectivity to Ca2+, So it can be used to adsorb Ca2+ from seawater.

由此可见，合成的LSX分子筛对钙离子具有较高的选择性，可以用于从海水中吸附钙离子。

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The selectivity and sensitivity of the super-regenerative receiver was improved under the modern integrated circuit technology.

在现代集成电路技术下,超再生接收机的选择性和灵敏度得到改善.

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Under suitable conditions, the conversion on 1, 2-propanediol asas % and the selectivity on acetone aldehyde %.

试验结果表明,在适宜的条件下, 该催化剂对1, 2-丙%,对丙酮醛选择性达到了%.

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