步量

A new approach for estimating the miss distance parameters of target was presented based on the extraction of target motion trajectory in space using range-only tracking measurements.

脉间步进频体制脱靶量测量系统发射高距离分辨率的宽频带信号，得到精确的目标距离信息，并通过距离差定位算法获得目标的空间位置。

With the increasing of the bedrock thickness, pressurized pace was increased gradually, the roof caving and surface subsidence were gentled step by step. When the thickness of roof bedrock was larger than 60m, the bench subsidence was not occurred, and the value of surface subsidence was also small. The mining technology was proper and highly active, and the support programme was feasible. The roof was controlled effectively by the support system, and achieved safety mining.

随着基岩厚度的增加，顶板来压步距逐步增加，顶板垮落与地表下沉越来越缓和，基岩厚度大于60m时，顶板来压不再出现台阶下沉，地面下沉量较小；针对不同厚度基岩提出的采煤方法合理，高效，支护方案可行，能够有效控制顶板，实现安全生产。

Methods: the cells are isolated by two-step enzyme digestion and purified by the Percoll density centrifugation,the proliferation and differentiation propertiesof which being observed.To study the effect of IGF-1 on satellite cell with MTT method and obtain adequate single satellite cell by frequent passaging.

运用两步酶消化法分离卫星细胞，不连续密度梯度离心法纯化后体外培养，观察其生长与分化特性，运用MTT法测定卫星细胞对不同浓度IGF刺激的反应，并运用频繁传代的方法获取足量单个肌卫星细胞。

"We have to take some of these people back for refitting," he said.

&我们得将一些人弄回去重新量一下，&他说，最后那个人走了两步，他的制服才动。

3"We have to take some of these people back for refitting," he said."That last man took two steps before his uniform moved."

3&我们得将一些人弄回去重新量一下，&他说，&最后那个人走了两步，他的制服才动。&

We have to take some of these people back for refitting," he said."that last man took two steps before his uniform moved.

我们得将一些人弄回往重新量一下，&他说，&最后那个人走了两步，他的制服才动。

We have to take some of these people back for refitting," e said."That last man took two steps before his uniform moved.

我们得将一些人弄回去重新量一下，&他说，&最后那个人走了两步，他的制服才动。

3A series of C_2-symmetric chiralβ-amino alcoholsⅢ-6 andⅢ-10were synthesized in several steps from natural amino acids,and applied in the asymmetric borane reduction of prochiral ketones.The catalytic activity ofⅢ-6 was better thanⅢ-10.

3以天然氨基酸为起始原料，经过简单的几步反应合成了开链冠醚类C_2-对称的手性β-氨基醇Ⅲ-6以及Ⅲ-10，将其应用于硼烷对前手性酮的不对称还原反应中，含有脯氨醇结构单元Ⅲ-6的催化效果要好于由其他氨基酸衍生的Ⅲ-10，THF为溶剂，回流，催化量为10 mol%时，最高得到85%的ee值。

Application of new generation of cutting system micro-step driven by small, lightweight motors, decreased vibration and noise, high-speed operation of motor driven cutting film cutter with an accuracy of 0. 005 mm ball spline linear motion, all of those is to eliminate the dry debris produced by process of cutting film , improving the pass rate of the products.

割刀系統應用新一代微步驅動的小型，輕量級馬達，振动與噪音更小，高速运转的马达带动切膜割刀配合精度为0.005 mm滚珠花键左右直线运动，这一切都是为了解决切膜过程中产生的干膜碎屑，提髙產品的良率。

The speed of produce tin,the time return tin,the interval time of produce tin can be adjusted steady and with tin back adjustable features,which can reduce the waste of welding 3 the mode of produce tin mode: automatic and manual produc tin for the selection of tin (produce tin manually can match a tin foot switch or manual switch out of tin), and the number of the tin can be set 4 all of the settings using DIP switch settings, easy to operate; 5 anti-static design can avoid sensitive electronic components damaged due to static electricity and 6 optional universal bracket solder 7 simple and easy welding to reduce the welding welding achieve the desired effect of waste, improve efficiency significantly.

产品说明Product description；1）采用步进电机，出锡精确且可灵活控制。2出锡速度、出锡量、回锡时间，出锡间隔时间均可调节且稳定，且设有可调的回锡功能，以减少焊接的浪费3出锡模式：全自动出锡与手动出锡可供选择（手动出锡可选配脚踏出锡开关或手动出锡开关），且出锡次数可设置4所有设置采用拨码式开关设置，方便操作；5防静电设计，能避免敏感电子零件因静电而受损坏6可选装万能焊锡支架7焊接简单容易、减少焊接的浪费达到理想焊接效果，工作效率显著提高。

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。