双倍

It was found that the samples PVP-PdCl2-CdCl2 and PVP-PdCl2-HgCl2, compared with PVP-PdCl2, exhibited much higher catalytic activity and dechlorination selectivity, and the yields of the coupling by-products were obviously decreased. For example, when p-chloroaniline was used as substrate, the reaction time was shortened to 1/8, and the yield of dechlorination product was about 25 times as much as the original one, and when p-chlorotoluene was used as substrate, the yield of coupling by-product catalyzed by bimetallic catalyst was 1/390 of that catalyzed by monometallic catalyst.

与负载型单金属催化剂PVP-PdCl2相比， PVP-PdCl2-CdCl2和PVP-PdCl2-HgCl2对氯代芳烃脱氯有高得多的催化活性和脱氯选择性，且偶联副产物显著减少；以对氯苯胺为底物时，双金属催化下的反应时间缩短为单金属催化下的1/8，而脱氯产物收率提高25倍；底物为对氯甲苯时，双金属催化下的偶联副产物仅为单金属催化下的1/390。

To verify this method, a 0.915/2.45 GHz dual band rat-race hybrid and a 0.915/2.58 GHz branch-line coupler were designed, fabricated, and measured.

此方法运用於双频段鼠圈式功率分配器和分枝线耦合器(Branch-line)，第一频段设计在0.915 GHz，并将原三倍频点移至2.45和2.58 GHz，形成双频特性。

The results were better than the one in which the sodium citrate was used as sole chelating agent.

在该双络合剂体系中，硫酸镍含量为1.15 g/L，是以柠檬酸钠为单一络合剂的两倍，而镀层中镍含量为4.59%，表明采用双络合体系具有明显的优点。

Firstly a fast direct computing 3kP algorithm in field was deduced,which only needed one inversion;the new double base number chain based on 1/2 and 3 could be integrated with high-speed direct computing 3kP and halving algorithm.Scalar multiplication based on the new chain only employed point addition,halving algorithm,triplication and direct...

在底层域推导出直接计算3kP的快速算法，该算法只需一次求逆；新设计的以1/2和3为基的双基数编码可结合高效的直接计算3kP和折半运算，基于该双基数编码的标量乘算法只涉及到点加运算、折半运算、三倍点和直接计算3kP，底层域运算复杂性得到降低，在NIST推荐的椭圆曲线上比Dimitrov算法效率提高70%以上，比Wong方法提高10%以上。

There are single load model and double -load model with multispeed mechanism .Optional drive mode includes sidle drive , pneumatic drive , Frequency conversion motor drive and servo motor drive .

轻型横走式机械手 Light weight sidle robots TYA系列适用于250吨至50吨卧式注塑机产品及水口取出，有单截式和倍速机构双截式，可选购横行驱动方式，气动驱动，双频马达驱动，伺服马达驱动。

Caged bicyclic phosphorous quadridentate silicon complex ; phosphorous-functionalized silses-quioxane ; phosphorus/silicon synergistic effect ; epoxy resin

双环笼状四配位硅；双环笼状倍半硅氧烷；磷硅协同效应；环氧树脂

A novel type of caged bicyclic phosphorous functionalized silsesquioxane was synthesized from caged bicyclic phosphorous quadridentate silicon complex in the presence of tetramethylammonium hy- droxide. The product was confirmed by FTIR, 29Si MAS NMR, MS and XRD spectra.

以双环笼状含磷四配位硅为前驱体，四甲基氢氧化铵为催化剂反应得到具有高度对称结构的双环笼状磷酸酯取代倍半硅氧烷，通过红外光谱，29Si固体核磁共振谱，质谱和X衍射光谱等手段确定了产物的结构和晶型。

An effect of laser energy enhancement occurs in dual-modular, the output energy of dual-modular is 15% higher than twifold energy of single modular.

实验表明双模块器件存在很强的激光脉冲能量增强效应，双模块串联输出的激光能量比单模块激光能量的两倍还大15%。

The sensitivity of the catalytic wave of thiram was 25 times higher than that of the corresponding reduction wave. The recovery was between 90.29%-96.10% in detection samples. The method was sensitive, simple, rapid.

福美双催化波灵敏度比相应的福美双还原波高25倍，对样品的平均检测回收率为90.29%~96.10%，该方法灵敏、简单、快速。

By a piece of type-II critical phase matching biaxial crystal LBO for extra-cavity and for the compound system of telescope and Lens second-harmonic generation,green laser at 532 nm was achieved with average power of 40.6 mW,pulse duration of 16 ns, and peak power of 181 W.

先采用双凸透镜组合成的望远镜系统对1 063 nm的红外激光进行扩束，再对该光束聚焦，最后经双轴晶体LBO倍频后，得到了平均功率为40.6 mW，脉冲宽度为16 ns，重复频率为14 kHz，峰值功率高达181 W的绿光激光输出，1063 nm→532 nm的转换效率高达58%。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。