查询词典 B.A.

In addition, we found that 4-phenyl-l,2,4-triazolinium N-ylides reacted withvarious electron-deficient olefins to afford pyrrole derivatives in good yields via 1,3-dipolar cycloaddition oxidative ring fission, In some cases, tetrahydropyrrolo[1,2-b]triazole and pyrrolo[1,2-b]triazole, which are stable and are not aromatized orcleaved in the reaction conditions, could be isolated, This is a facile and novel route forthe synthesis of pyrrole derivatives.

此外，本文研究了五员三氮杂环化合物4-苯基1，2，4-三氮唑的N-叶立德，发现在氧化剂存在下与缺电子烯烃发生1，3-偶极环加成反应生成的吡咯并[1，2-b]三氮唑，在大多数情况下开环生成吡咯衍生物，反应条件温和，收率良好，是合成吡咯衍生物的一个新的途径。

Therefore, due to the fact that the (111) pole density in the subsurface of decarburized bands still have a higher intensity, adding Mo into Hi-B steels could lower the slab reheating temperature.

本文采用X射线极密度和取向分布函数方法，证明含Mo Hi-B钢采用1310℃低温铸坯加热时，其热轧板表层织构特征与不含Mo并在1380℃高温铸坯加热时相似，为典型的剪切形变织构，两者的热轧板与脱碳板表层织构特征也极为相似，而含Mo Hi-B钢在1380℃铸坯加热时却没有以上这些相似性。

Using modified conventional powder metallurgy process for sintered Nd-Fe-B magnets , including annealing of ingot alloy, hydrogen decrepitating, modified jet mill and adding additive during jet milling, we have mass-produced high performance and high corrosion resistance sintered Nd-Fe-B magnets from a conventional ingot alloy without strict protections against oxidation.

利用改进的传统粉末冶金工艺(铸锭热处理、氢爆、改进型气流磨设备以及在气流磨中掺入添加剂等)，在无严格的防氧保护情况下，从传统合金铸锭出发，工业化生产出具有高耐蚀性的N48～50档烧结Nd-Fe-B 磁体。

On the basis of DSC curves of B/KNO_3 igniter powder,the apparent activation energy E of thermal decomposition is calculated with Kissinger′s methods and the probable mechanism function is available from master plot method.

利用差示扫描量热法得到B/KNO3的热分解曲线，用K iss inger方程估算了B/KNO3的表观活化能，用标准作图法得到最可几热分解机理函数，再用积分法求得不同升温速率下热分解的动力学参数活化能E和指前因子A。

A government owned and controlled corporation duly created by Act, with its principal office at ("Company B"); and

公司 B ，一家按照之规定正式设立、为政府所有并控制的公司，其总部设在(以下称&公司 B&)；和

A gel- filled version (water-retardant jelly) is available for installation in damp or humid areas. B connectors are also known as chiclets, beans, beanies, and rodent rubbers.

内部填充了凝胶体的B连接器可以应用于潮湿或湿润地区的安装工程。B连接器还称为橡胶式、豆子、蜂胶以及咬嚼橡胶。

Soybean hypocotyls were treated with doses of UV-B at 8.22 kJ/m~(2d and 12.42 kJ/m~(2d UV-B radiation, corresponding to depletions in the stratospheric ozone of about 12 % and 20%, respectively, for a clear solstice day at Lanzhou city (36.04°N, 1550m),China.

报道表明增强 UV - B辐射会引起细胞 DNA形成嘧啶二聚体 [2 ] ，影响细胞正常代谢和分裂 [3] ，导致黄瓜子叶 [4 ] ，欧芹叶片 [5] ，小麦叶片 [6 ] 细胞分裂速度减慢。

Thomas II, M group (Mexibetine 70μmol/L+ st. Thomas II), HM group (HOE642 20μmol/L+ Mexibetine 70μmol/L+ st. Thomas II). The percent recovery of heart function and water content ofmyocardial were determined after I/R both in group A and B. C was composed of 4 groups (n=24, 6 in each group) as B but the dugs were added at the earlier period of reperfusion.

中，心肌进行缺血/再灌注后检测其心功能恢复率和心肌水含量。B组（n=24，每组6只）分为对照组，H20组（HOE642 20μmol/L组），M组（慢心律70μmol/L组），HM组（HOE642 20μmol/L组＋慢心律70μmol/L组），加入心脏停搏液

A" B" and "C" are secondary spacings to be put on the test sample in the event the minimum spacing fails.

& &B&和&C&是第二选择的间距，在最小间距失败的情况下，就将&B&和&C 间距进行试验。

The results of XRD and DSC showed that ginkgolides existed in solid dispersion at amorphous form or solvates form. The dissolution rate of ginkgolide B in solid dispersion was increased dramatically compared with raw material.

银杏内酯 B从PVP固体分散体中的溶出速率比原药粉末显著提高，且药物中银杏内酯A，B，C和白果内酯从固体分散体中的溶出相似性(f2值均大于 50)优于原药粉末。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。