双倍的

The activities of carboxylesterase、glutathion-S-transferase and acetylcholinesterase per insect increase greatly and the properities of esterase and acetylcholinesterase change also throughout larval development from 1-day-old to 4th instar. The affinity for Asch and the sensitivity to insecticide of acetylcholinesterase in 3rd instar larvae are significantly lower than that in 4-day-old larvae.

幼虫从1日龄生长到4龄时，单头幼虫的羧酸酯酶、谷胱甘肽转移酶、乙酰胆碱酯酶活力急剧增长，4龄幼虫相对于1日龄幼虫，HJ-R、HD-S上述3种酶系的活力分别增长了148、172.6、65.6倍和203、60.9、77.4倍；生长过程中，全酯酶、乙酰胆碱酯酶的性质也发生变异，特别是从4日龄生长到3龄时，乙酰胆碱酯酶的米氏常数、双分子速率常数均发生明显的改变，3龄幼虫乙酰胆碱酯酶对底物的亲和力以及对杀虫剂的敏感性显著低于4日龄幼虫。

The fore equipment of Chemical fiber two-for-one twister,fancy twisting machne and cover Yarn Machine make different types material into double cone shape or parallel bobbims for those machines using,and suppoying the yarn merhing function for reguar materials.

化纤倍捻机、花式捻线机、包覆纱机的前道设备，把不同规格的原料筒子络绕成可在化张倍捻机、花式捻线机、包覆纱机上加工的双锥形、平行筒子，可提供一般原料的并丝功能。

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。

The reason is that the population of the ground state descends and the population of the first-excited state increases in the two-color coherent lase relative that in the monochromic laser and the transition channel of the electron to the even-parity continuum

氦离子在添加倍频光的双色场作用下高次谐波产生效率极大提高的原因是：倍频光极大地加快了电子电离到连续态及返回基态这一过程，使辐射出的高次谐波光子数大大增加，该初步阐释可为高次谐波真正应用到实际中提供一些理论启示。

PartⅡ:Effect of bicyclol on hepatocyte apoptosis in alcohol-intoxicated mice and related mechanismsThree consecutive intragastric administration of alcohol(6g/kg)in 12h interval resulted in an obvious liver injury and inflammation in mice,as indicated by the elevation of serum alanine transaminase(2.2 fold of control),increased hepatic COX-2 protein expression(2.2 fold of control),as well as liver pathological changes characterized by myelonic degeneration,vacuolar degeneration and inflammatory infiltration.

双环醇对酒精中毒小鼠肝脏细胞凋亡的保护作用及机制研究小鼠连续三次酒精(6g/kg)灌胃后可导致明显肝损伤，变现为血清ALT水平升高(为对照组的2.2倍)，肝脏炎症相关蛋白环氧合酶-2(cyclooxygenase-2，COX-2)表达增加(为对照组的2.2倍)，肝组织出现髓样变性、小空泡变性和炎性细胞浸润。

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。

Since plants in the twin-row system were separated into two rows rather than one in the study, they intercepted almost twice as much light as plants in the single-row system.

由于双垄大豆是分成两行种植的，因此，双垄大豆所阻挡的光线比单垄大豆多出近两倍。

The results of transient transfection showed that the recombinant plasmid could be lowly expressed in the murine macrophage cell line RAW264.7 and murine melanoma cell line B16, both of which can endogenously express Tim-3, but not in the African green monkey kidney cell line COS-7 in which no endogenous Tim-3 could be detected.

结果 pGL3-Tim-3P2经PCR、双酶切及DNA测序分析鉴定正确无误；pGL3-Tim-3P2转染RAW264.7和B16细胞（两种细胞均可表达内源性Tim-3）24 h和48h，双荧光素酶活性检测显示其启动子相对活性约为pGL3-Basic空载体的2倍；而pGL3-Tim-3P2转染不表达内源性Tim-3的COS-7细胞后检测不到荧光素酶活性。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。