查询词典 selective

Experiment shows that for coated wire calcium ion-selective electrodes with copper matrix,there is a linear dependence of the electrode potential on logarithm calcium ion activities over a range of 10'(-1)-2x10~(-5) mol/L,the limit of detection is 8x10~(-6) mol/L,the electrode pote...

结果表明，铜基涂丝钙离子选择电极线性范围为10~(-1)-2×10~(-5) mol/LCa~(2+)，检测极限达8×10~(-6) mol/L，斜率为30±2mV，适用 pH 范围为4。 5-11。 0，响应时间少于15s，内阻低，选择性和稳定性好，使用寿命一般为三个月左右，并成功的用于水质分析及钙离子的有关络合物稳定常数的测定。

A stable, water-insoluable film was prepared by oxidative electropolymerization of pyrogallol in pH7.0 phosphate buffer solution, anti modified on a glassy carbon electrode surface by electrochemical method. The modified electrode was exploited for the selective preconcentration of Cu at a certain potential. The preconcentrated Cu was firstly reduced at a certain potential and then was determined by differential pulse stripping voltammetry.

采用电化学方法在pH7.0磷酸缓冲溶液中，将邻苯三酚氧化电聚合制成稳定的水不溶性膜修饰在玻碳电极表面，将制得的膜修饰电极在一定电位下选择性预富集铜，并用差分脉冲溶出伏安法测定。

Methods From July 2007 to December 2008, 331 patients received routine ERCP in our hospital. 42 cases of them were diverted to receive precut sphincterotomy, because selective bile duct cannulation with conventional methods was difficult.

分析2007年7月至2008年12月331例行ERCP治疗的患者，其中42例常规方法选择性胆管插管困难者改行乳头括约肌预切开术治疗的临床资料，并进行比较。

Methods From July 2007 to December 2008,331 patients received routine ERCP in our hospital.42 cases of them were diverted to receive precut sphincterotomy,because selective bile duct cannulation with conventional methods was difficult.Both clinical data were studied and compared.

分析2007年7月至2008年12月331例行ERCP治疗的患者临床资料和其中42例常规方法选择性胆管插管困难改行乳头括约肌预切开术治疗的患者临床资料，并进行比较。

Methods From July 2007 to December 2008,331 patients received routine ERCP in our hospital.42 cases of them were diverted to receive precut sphincterotomy,because selective bile duct cannulation with conventional methods was difficult.Both clinical data were studied and compared.

分析2007年7月至2008年12月331例行ERCP治疗的患者，其中42例常规方法选择性胆管插管困难者改行乳头括约肌预切开术治疗的临床资料，并进行比较。

Two of the reasons it seems impossible to prestate such preadaptations are these: How would we prespecify all possible selective environments?

似乎不可能预先陈述这些预适应的原因有两个：我们如何才能指定所有可能的选择环境？

Two of the reasons it seems impossible to prestate such preadaptations are these: How would we prespecify all possible selective environments?

关于似乎预先陈述这些预适应是不可能的有两个原因：我们如何才能指定所有可能的选择环境？

In an embodiment, the selective hydrogenation catalysts of this disclosure are used in the hydrogenation of highly unsaturated hydrocarbons such as for example and without limitation acetylene, methylacetylene, propadiene or combinations thereof.

在实施方案中，本公开的选择性加氢催化剂被用于高度不饱和烃的加氢中，其中所述高度不饱和烃例如但不限于乙炔、甲基乙炔、丙二烯或它们的组合。

The main objective of this research project is to modify the Methyl-Acetylene/propadiene selective hydrogenation reaction system of the No.3 Naphtha Cracker in CPC. The original gas phase reaction system was redesigned to a liquid phase reaction so that higher propylene selectivity was achieved and lower rates of propane and green oil were produced. To recover effectively the higher production of valuable propylene from the reaction system, the following fractionator was also redesigned.

本研究之目的在於修改中油公司三轻工场老旧的甲基乙炔／丙二烯选择性氢化气相反应系统，使成为液相反应系统，藉由液相反应的优异性，提高由MAPD氢化得到丙烯之选择率，同时降低丙烷及绿油产率，以增加丙烯产率，另亦修改丙烯精馏系统，以提升蒸馏塔提纯之效率。

The reaction results of the selective hydrogenation of MethylAcetyleneand Propadiene in C 3 distillate by catalytic distillation were investigated with randomlypacked structure of packingtype catalyst, the combined structure of sieve tray and packingtype catalyst as well as the structure with interlaced packing and ordinary catalyst.

考察了填料状催化剂散装结构、筛板填料状催化剂复合结构、规整填料与普通催化剂交错排列结构等用于C3 馏分中丙炔、丙二烯催化蒸馏选择加氢过程的反应效果，综合考虑催化剂制备的难易、工业装置长周期运转的必要性、传质对反应的影响等因素，推荐在工业装置上采用规整填料与催化剂交错排列结

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。