使离心

We transformed RMgBr into R-Ti derivatives with the production of byproduct MgBrO~(i-Pr at the same time, but we didn\'t need romove the Mg salt by centrifugation or chelating reagents, for bis[2-(N,N-dimethylamino)ethyl] ether could chelate with Mg atom and thereby reduced the Louis acidity of Mg salt, so we used R-Ti derivatives produced in situ to alkylate the aldehydes induced by BINOL-Ti complexes..

我们通过利用TiO~(i-Pr_4使格氏试剂转化成烷基钛，同时产生具有亲核加成促进作用的副产物MgBrO~(i-Pr，由于BDMAEE能与MgBrO~(i--Pr络合降低其路易酸活性，所以不需要离心或者借助络合试剂完全除去镁盐，而使用原位生成的烷基钛在BINOL-Ti诱导下对醛进行不对称加成。

We did our best to get the optimal methods to make the liquid more atomize, and established a model for gas-liquid mass and heat transfer process of cross-flow RPB.

根据气液两相流在多级离心加速雾化条件下流体的动量与质量方程，分析研究液体的雾化程度、液滴粒径、运动速度与方向、停留时间等，研究液相多级分散的级数、分散方式以及离心力场强度对气液相界面积、传质系数以及气相流阻的影响关系及其规律性，探讨沿旋转床径向使液体均匀雾化的最佳方法，建立旋转床中气液两相的运动与传质数学模型。

Bacteria which concentration more than or equal to 10~2/ml in CSF can be enriched effectively by means of centrifugalization when the relative centrifugal force is 5753xg and centrifugalization time is 15min and the rate of positive cultivation of pathogenic bacteria in clinical specimen can be improved by centrifugalization with high speed.

离心法不能使脑脊液中浓度低于10~2/ml的细菌浓集；在离心力5753×g离心时间为15分钟的离心条件下，采用离心法能使脑脊液中浓度大于等于10~2/ml的细菌得到最佳浓集，提高临床标本中细菌培养的阳性率。

RESULTS: There were three functions of hamstring in gait cycle: decelerating the concentric contraction of the iliopsoas at bending hipbone; decelerating the concentric contraction of the quadriceps at knee bending; as well as making the lower limbs under the knee get certain angular momentum at toe-off, by eccentric contraction.

结果：腘绳肌在跑步周期中的作用有3个：在屈髋时通过离心收缩拮抗髂肌；在伸膝时通过离心收缩拮抗股四头肌；在支撑阶段通过向心收缩为膝关节提供动态稳固作用和使小腿和足获得一定的角动量。

The purification procedure described in this paper is quite simple. Addition of CaCl〓 helps to maintain oxygen activity and aggregate the membranes so that they can be conveniently pelleted in a short time by normal centrifugation instead of ultracentrifugation.

在提取液中加入一定浓度的Ca〓（Ca〓既有助于维持类囊体膜的放氧活性又可以使类囊体膜在较低的离心速度下使类囊体膜得到凝集沉淀），从而在较短时间内、在高速离心的情况下得到了纯度较高并具有较高放氧活性的发菜类囊体膜。

The dynamo runs at rull speed to drive main shaft,then the main shaft makes the emulsifying wings in emulsification grove rotate,which absorbs the liquid in its brand groove into ring groove through guide vanes on upper and lower side s of the groove.The v

由电动机全速运转带动主轴，经主轴转动乳化框槽内之乳化翼片，使其将桶槽内之液体经框槽上、下两侧之导流叶片吸入环状框槽内，经以主轴为中心高速圆周旋转叶片；连续使乳化翼端刀面与乳化框间极小之间系高频率之强力切割剪断、粉碎，再借叶片高速离心旋转排挤，持续循环混合，以极短之时间即可完成均质乳化之处理。

Aureus fermentation media, the centrifugation pelleting the bacterial cells and enriching the media with the secreted Protein A.

也可以通过金黄色葡萄球菌发酵培养基的连续高速离心消除葡萄球菌细胞，离心使细菌细胞沉淀且使培养基富含分泌的蛋白A。

This blowing fan has a hub connected to the rotating shaft of a motor and a number of blades mounted on the outside surface of the hub at fixed intervals to flow air in the centrifugal direction of the fan. Although this fan is produced in a shape of axial fan or diagonal fan by integrally forming the separate turbo blade on the tip or trailing edge of the rotor blade, the blowing noise can be reduced in addition to the increase in the entire wind quantity of the fan by embodying the optimum set angle of the turbo blade.

由连接在电动机的旋转轴上的轮毂和按一定间隔安装在上述轮毂外周面上的多片叶片构成、使空气向风扇的离心方向流动的送风风扇，虽然制作成将另外的涡轮叶片形成在旋转叶片的叶梢或后沿上而与其成为一体的轴流式风扇和斜流式风扇的形式，但通过实现上述涡轮叶片的最合适的设置角度，便使整个风扇的风量增大，同时减小送风噪音。

The friction plate produces friction damping on the rope wheel under the influences of centrifugal force. The gear speed change helps the rope wheel produce balanced damping torgue when people descend.

利用离心使磨擦块在绳轮上产生磨擦阻尼，通过齿轮变速，使阻尼距与人下降时在绳轮上形成的主力距相平衡，以实现匀速下降，从而保证了被救者的安全。2。

The soluble sample was fractionated via a dispersion-centrifugation cycle, carbon nano-particles were removed and highly pure and well-separated SWNTs were successfully obtained in the middle fraction.

高速离心的方法能使碳纳米管存在于离心悬浮液中，而碳颗粒杂质形成沉淀，从而分离得到高纯度的单壁碳纳米管。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。