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It was seen that strain 6055 generated three kinds of dextransucrases whose molecular weights were 151 kDa,142kDa and 117kDa,respectively.Among them,the former two ones were found both in supematants and cell wall,while the later was only found in the fermentation liquor.Strain DM 1-2 synthesized two kinds of dextransucrases,and their molecular weights were 183kDa and 142kDa,respectively.The former existed both in cell wall and out of cell,but the later only was located on cell surface.Strain PC 13 produced three kinds of dextransucrases,and their molecular weights were 148kDa, 138kDa and 115kDa,respectively.The former two ones were ectoenzyme while the later was linked to cell.Resembled to strain 6055,strain L4 produced two types of dextransucrases coexisting in supernatants and cell wall with molecular weights of 145 kDa and 136kDa,respectively,but the dextransucrase of 115kDa was only found in free-cells supernatants.

结果显示，菌株6055可产生分子量分别为151kDa、142kDa和117kDa的三种葡聚糖蔗糖酶，其中前两者同时存在于上清液中和细胞表面，而后者只存在于上清液当中；菌株DM1-2可以产生两种葡聚糖蔗糖酶，分子量分别为183kDa和142kDa，前者同时存在于上清液中和细胞表面，而后者仅能存在于细胞表面；菌株PC13可以产生分子量分别为148 kDa、138 kDa和115kDa的三种葡聚糖蔗糖酶，前两者属于胞外酶，而后者与细胞相连；与菌株6055相似，菌株L4可以产生两种同时存在于上清液和细胞表面的葡聚糖蔗糖酶，分子量分别为145 kDa和136kDa，而分子量为115kDa的葡聚糖蔗糖酶只存在于上清液中。

The basic principle is based on spherical astronomy and elementary geometry of the trajectory mapping method based on the observation of a celestial body zenith distance, then the ship is located in order to sing the next point as the center of this satellite zenith distance of the ship's position as the radius of the circle, observing the same two objects, or objects at different times of the two observations, we can get two ship's position round, then the ship must have been a point of intersection of two ship's position on the circle.

其基本原理是建立在球面天文学和初等几何中的轨迹作图法基础上的，观测一个天体的天顶距，则航船就位于以星下点为圆心，此星天顶距为半径的船位圆上，观测两个天体或者不同时间同一天体的两个观测值，就可以得到两个船位圆，则航船一定在两个船位圆的一个交点上。

In the last part of the paper, we construct a family of 2 parameter cubic algebraic curves interpolating two given endpoints and two given tangent lines and two given curvatures at these two endpoints with different initial cases in detail.

引 言三次参数曲线在计算机辅助几何设计与计算机图形学领域一直扮演着十分重要的角色，这主要是由于三次参数曲线是具有奇异性的次数最低的曲线，这些奇异性包括尖点、拐点和闭圈。

Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.

本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型，并对其进行了有限元离散以及泛函分析，推导出总体方程；在基本假设和边界条件基础上，给出笼型感应电动机二维电磁场的求解区域，然后应用有限元并结合内外双收敛方法，对样机稳态运行进行数值计算，得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。

I got on Board the Ship, as before, and prepar'd a second Raft, and having had Experience of the first, I neither made this so unwieldy, nor loaded it so hard, but yet I brought away several Things very useful to me; as first, in the Carpenter's Stores I found two or three Bags full of Nails and Spikes, a great Skrew-Jack, a Dozen or two of Hatchets, and above all, that most useful Thing call'd a Grindstone; all these I secur'd together, with several Things belonging to the Gunner, particularly two or three Iron Crows, and two Barrels of Musquet Bullets, seven Musquets, and another fowling Piece, with some small Quantity of Powder more; a large Bag full of small Shot, and a great Roll of Sheet Lead: But this last was so heavy, I could not hoise it up to get it over the Ship's Side.

我像前次那样上了船，并又做了一个木排。有了上次的经验，我不再把木排做得像第一个那么笨重了，也不再装那么多货物了，但还是运回了许多有用的东西。首先，我在木匠舱房里找到了三袋钉子和螺丝钉，一把大钳子，二十来把小斧，尤其有用的是一个磨刀砂轮。我把这些东西都安放在一起，再拿了一些炮手用的物品，特别是两三只起货用的铁钩，两桶枪弹，七支短枪、一支鸟枪，还有一小堆火药，一大袋小子弹，还有一大卷铅皮。可铅皮太重，我无法把它从船上吊到木排上。

I got on Board the Ship, as before, and prepar'd a second Raft, and having had Experience of the first, I neither made this so unweildy, nor loaded it so hard, but yet I brought away several Things very useful to me; as first, in the Carpenter's Stores I found two or three Bags full of Nails and Spikes, a great Skrew-Jack,* a Dozen or two of Hatchets, and above all, that most useful Thing call'd a Grindstone; all these I secur'd together, with several Things belonging to the Gunner, particularly two or three Iron Crows,* and two Barrels of Musquet Bullets, seven Musquets, and another fowling Piece, with some small Quantity of Powder more; a large Bag full of small Shot, and a great Roll of Sheet Lead: But this last was so heavy, I could not hoise* it up to get it over the Ship's Side.

我像前次那样上了船，并又做了一个木排。有了上次的经验，我不再把木排做得像第一个那么笨重了，也不再装那么多货物了，但还是运回了许多有用的东西。首先，我在木匠舱房里找到了三袋钉子和螺丝钉，一把大钳子，二十来把小斧，尤其有用的是一个磨刀砂轮。我把这些东西都安放在一起，再拿了一些炮手用的物品，特别是两三只起货用的铁钩，两桶枪弹，七支短枪、一支鸟枪，还有一小堆火药，一大袋小子弹，还有一大卷铅皮。可铅皮太重，我无法把它从船上吊到木排上。

The glassiness barrier layer mixes glass dust and mill addition into slip glaze, 50-180 um barrier layer is prepared by painting slip glaze on the surface of stainless steel, components of the glass dust according to the percent by weight comprises SiO2 37-40, B2O3 11-14, one or two kinds of Na2O and K2O18-20, one or two kinds of BaO and SrO 3.5-6.5, one or two kinds of Al2O3 and Cr2O3 2.5-10.5, one or two kinds of residues such as CaO, CaF and Na3AlF6, and the mill addition comprises agglomerants such as kaolin, borax, sodium nitrite and the like, adhesive agents such as CMC, PVA and the like and water.

该玻璃质壁垒层是将玻璃粉和磨加物混合成釉浆，涂在不锈钢表面制备50-180μm涂层，玻璃粉的成分按重量百分比：37-40 SiO 2 ，11-14 B 2 O 3 ，18-20 Na 2 O、K 2 O中的一种或两种，3.5-6.5 BaO、SrO中的一种或两种，2.5-10.5 Al 2 O 3 、Cr 2 O 3 中的一种或两种，余量CaO、CaF、Na 3 AlF 6 中的一种或多种；磨加物包括高岭土、硼砂、亚硝酸钠等粘结剂、CMC、PVA等密着剂和水。

In her next to two disciples, the two Buddha, the King for two days, two King Kong, especially those on the right side of King Kong, protruding eyes, in front of glower, his hands make a fist, high body muscles bulge, pressing ah momentum.

在她旁边的两个弟子，两个佛像，国王两天，两个金刚，特别是右侧的金刚，凸出的眼睛，前面的怒视，双手握拳，高身体的肌肉隆起，紧迫啊势头。

School covers an area of 20066.6 square meters, 15,000 square meters of construction area, Sam Tung buildings, two dormitory, a laboratory building, two multi-purpose teaching the Office, two large computer room, Health Physics and Chemistry Laboratory equipment The two rooms, all equipped with the Office of Teaching and Research Group and a microcomputer to realize the broadband Internet access to a network of teachers to prepare lessons, curriculum resources, information technology, modern teaching methods.

学校占地面积20066.6平方米，建筑使用面积15000平方米，有教学楼三栋、宿舍楼两栋，实验楼一栋，多功能教学厅两个，大型微机室两个，理化生实验室、仪器室各两个，各办公室和教研组全部配备了微机，实现了宽带上网，达到了教师备课网络化，课程资源信息化，教学手段现代化。

My Dog was a very pleasant and loving Companion to me, for no less than sixteen Years of my Time, and then dy'd, of meer old Age; as for my Cats, they multiply'd as I have observ'd to that Degree, that I was oblig'd to shoot several of them at first, to keep them from devouring me, and all I had; but at length, when the two old Ones I brought with me were gone, and after some time continually driving them from me, and letting them have no Provision with me, they all ran wild into the Woods, except two or three Favourites, which I kept tame; and whose Young when they had any, I always drown'd; and these were part of my Family: Besides these, I always kept two or three houshold Kids about me, who I taught to feed out of my Hand; and I had two more Parrots which talk'd pretty well, and would all call Robin Crusoe; but none like my first; nor indeed did I take the Pains with any of them that I had done with him.

至于我的那些猫，前面也已说过，由于繁殖太多，我不得不开枪打死了几只，免得它们把我的东西通通吃光。后来，我从船上带下来的两只老猫都死了，我又不断地驱逐那些小猫，不给它们吃东西，结果它们都跑到树林里去，变成了野猫。只有两三只我喜欢的小猫被我留在家里驯养起来。可是每当它们生出小猫时，我就把小猫投在水里淹死。这些都是我家庭的一部分成员。另外我身边还养了两三只小山羊，教会它们在我手里吃东西。此外，还养了两只鹦鹉，也会说话，也会叫"鲁宾逊"，可都比不上第一只说得那么好；当然，我在它们身上花的功夫也没有第一只那么多。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。