可循环的

In section 4,we research the solvable groups of finite rank,and provethat the union set of all quasi-cyclic subgroups of G is a characteristic subgroup andthe Hirsch number hdoes not exceed n if G is a solvable group of rank n.Inparticular,for an arbitrary solvable torsion-free group G of rank n,we give theupper bound fof the derived length of G.

在第4节里，我们研究了有限秩的可解群，证明了这类群的所有拟循环子群构成它的一个特征子群，且对秩n的可解群G来说，其Hirsch数h≤n，另外，我们给出了秩n的无挠可解群的导出长度的一个上界。

Is also say, fictile build the figure of "not easily fat, can easily lose down again", is reduce weight necessary;Can also promote blood circulation, strengthen immunity dint, give cell with the vitality, for improve cold hand disease and anti- decrepitude to contain obvious effect.

也就是说，可塑造"不易胖，又可轻松瘦下来"的体形，是减肥不可或缺的；还能够促进血液循环，增强免疫力，给予细胞以活力，对于改善冷手症与抗衰老效果明显。

The characteristics of the different fuel cycle options are analyzed from the view point of sustainable development of nuclear fission energy.

从核裂变能可持续发展的角度，分析了各种核燃料循环方式的特点，指出了核燃料"一次通过"方式不符合核能可持续发展战略。

And we get a criterion for the cyclic conjugacy separability of generalized free products.

第五章研究了群的共轭可分性，而且我们还得到了循环共轭可分性的一个判定定理。

The synthesis mechanism of Al_(13)in the process of electrolysis was discussed,the effects of electrolysis voltage,the original concentration of Al~(3+),the circulation mixing rate of the electrolyte and the exchanging frequency of the electrodes on the synthesis velocity of Al_(13),ratio of Al_(13)in total Aland the electrolysis time were studied.

本工作对电解过程中Al_(13)的形成机理进行了探讨，并研究了电解电压、Al~(3+)的初始浓度、电解液的循环搅拌速度和阴阳电极的互换频率对Al_(13)的合成速度、Al_(13)占总铝的比率及电解所需时间的影响，得出了电解法制备Al_(13)的最佳工艺条件：电极互换频率为1次·min~(-1)、电解液中Al~(3+)的初始浓度为0.5000mol·L~(-1)、电解电压为12V和0.5L·min~(-1)的电解液循环搅拌速度，在此条件下电解125min可制得碱化度为82.0%，Al_(13)占总铝的比率达91.2%的液体产品。

The use of renewable resources instead of conventional sources of energy, was an objective requirement of the sustainable development in tourism, and applicably an important aspect of tourism cycle economy.

可再生资源代替常规能源使用，是旅游可持续发展的客观要求，是旅游循环经济应用的重要方面。

Gathers the aspartic acid isone kind has good anti- is filthy, the slow eclipse performanceenvironment friendly water treatment medicinal preparation, may use inthe recirculated cooling water, the boiler and the oil gas watertreatment, may prevent filthily stops up the pipeline and the stratum,enhances the thermal efficiency, prevents the metal the corrosion.

聚天冬氨酸是一种具有良好阻垢、缓蚀性能的环境友好水处理剂，可用于循环冷却水、锅炉及油气水处理，可防止垢堵塞管道和地层，提高热效率，阻止金属的腐蚀。

Under the electromagnetic force the angle steel and the steel plate, in puts in gallbladder which the steel plate makes, in the gallbladder is uses sets up the salt bath which the brick and the standard brick compose, in the gallbladder is mainly uses in preventing the fused salt permeating heat insulating

三项埋入式电极盐浴炉采用盐类作加热剂，根据不同的工作温度，可选用不同成份的盐或混合盐，盐在熔化前是不导电的，因此盐浴炉使用时必须使用起动电极溶化，由于电流通过导电的溶盐不断产生热量，故可保持溶化状态，因电极在电磁力的作用下，通过自然对流和电磁搅拌而使熔盐不断循环，故可迅速和均匀的加热工件。

With a view to knowing more about how NaHSO〓 increased Pn in higher plants, we studied the effects of NaHSO〓 on the cyclic electron flow around PSI in wheat (Jing 411) and rice (Shan-you 63). It was observed that the transient increase in chlorophyll fluorescence after the termination of actinic light was increased and the half-time of re-reduction of P700〓 was shortened in both rice and wheat leaves, indicating that cyclic electron flow around PSI was accelerated by NaHSO〓 treatment.

为探究NaHSO〓促进高等植物光合作用的机理，我们研究了NaHSO〓对小麦（京411）和水稻（汕优63）围绕PSI的循环电子传递影响，实验发现低浓度NaHSO〓可促进小麦和水稻叶片的叶绿素荧光在作用光关闭后的短时上升以及缩短叶片在远红光后P700〓再还原的半时间，表明NaHSO〓可以促进小麦和水稻的围绕PSI的循环电子传递。

Three-phase embed electrode salt bath furnace use the salt class as heating impregnant, according to the different operating temperature, could select different ingredient salt or compound salt, the salt is not electric beforemelting, therefore the salt bath furnace must use the starting-electrode to melt when using, because the electricity bring quantity of heat unceasingly through electric dissolving salt, so can maintain the dissolving state, because of electrode under the electromagnetic effect,make the dissolving saltcycle unceasingly through natural convection and magnetism mix round,therefore can well-proportioned heat workpiece rapidly.

三项埋入式电极盐浴炉采用盐类作加热剂，根据不同的工作温度，可选用不同成份的盐或混合盐，盐在熔化前是不导电的，因此盐浴炉使用时必须使用起动电极溶化，由于电流通过导电的溶盐不断产生热量，故可保持溶化状态，因电极在电磁力的作用下，通过自然对流和电磁搅拌而使熔盐不断循环，故可迅速和均匀的加热工件。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐