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For the all classes of dies, if we analyse the fluctuate, tendency of increase and decrease and law which appeared in the die's whole life, we will find that the master of the error are changeless; the error that because the abrade of the cutter and impression will be as the cutter grinding times increased at the same time. And that will cause the error oversize gradually; and also have another part error are unconventional , unforeseen.

对各类冲模冲件误差在冲模整个寿命中出现的波动、增减趋向及规律等进行全面分析便可发现:冲件误差的主导部分是不变的;因刃口或型腔的自然磨损而出现的误差增量随冲模刃磨冲数增加而使这部分误差逐渐加大;还有部分误差的增量是非常规的、不可预见的。

Content of actinomycosis was increased by 2.40, 41.13 and 23.39 percent by using fully-fermented pig manure, oil cake or fully-fermented crop straw at 63d after planting respectively.

前作或当季施用腐熟猪粪移栽后63d增加了真菌总量,其增量分别为14%、13%;当季施用腐熟猪粪、菜籽饼、腐熟秸秆在移栽后63d增加了放线菌总量,其增量分别为2.4%、41.13%、23.39%。

Through transformation of parameters, the meshing design system among Hy-Vo silent chain, sprocket and hob was built up based on the research of the pitch increment and the equivalent apothem increment of the effects on the common normal line length when the Hy-Vo silent chain was wrapped around and located on the sprocket, with the proper meshing conditions of Hy-Vo silent chain and sprocket into consideration. The design method of common normal line length was put forward that can be used when the value of the sprocket pressure angle was equal or unequal to the value of the Hy-Vo chain plate pressure angle.

在分析Hy-Vo齿形链链节围在链轮轮齿上定位时其节距增量和当量边心距增量对链轮公法线长度影响的基础上,根据Hy-Vo齿形链与链轮的正确啮合条件,通过参数变化,建立了Hy-Vo齿形链-链轮-滚刀三者之间的啮合设计体系,提出了既适用于链板齿形角等于链轮压力角情况,也适用于链板齿形角不等于链轮压力角情况的Hy-Vo齿形链链轮公法线长度的计算方法。

The uniform of nonlinear incremental equation at critical points or non-critical points are deduced, and the relations between incremental solutions and nullspace basis of incremental matrix are put forward. So the incremental solutions can be obtained directly by nullspace basis, and can be expressed nullspace basis of matrix.

推导了非线性增量平衡方程在极值临界点与非临界点解的统一形式,指出增量解与增广矩阵零空间基的关系,从而可直接由零空间基获得增量解,并直接表示为增广矩阵零空间基的形式。

Furthermore, notes the WEO, these economies "account for more than 90 per cent of the rise in consumption of oil products and metals and 80 per cent of the rise in consumption of grains since 2002"(with scandalously wasteful biofuels programmes contributing most of the remainder).

此外,《世界经济展望》指出,"自2002年以来,全球石油产品和金属消费增量的90%以上、全球粮食消费增量的80%以上"来自这些经济体。(其余的粮食消费增量主要来自浪费极其严重的生物燃料工程。

Based on definition of strain energy function,increment formula of stationary potential energy of finite displacement theory were derived in terms of Kirchhoff stress tensor and Green strain tensor.

基于有限位移理论应变能密度函数的定义,利用Kirchhoff 应力张量和Green应变张量,推出了非线性分析中增量形式的势能驻值公式,并证明了由势能增量驻值原理得到的增量平衡方程形式与由虚位移原理所得的结果完全一致。

The present invention relates to a method for heuristically starting up DC brushless servo electric machine, including the following steps of (1) after powerup of an increment type photoelectric encoder, electrifying a stator winding two by two with identical time interval to generate six-directional stator winding resultant magnetic fields;(2) detecting six different angles rotated by the rotor within identical tiny time interval by the photoelectric encoder;(3) selecting most positive value rotation angle from the six different angles, and determining maximum torque corresponding to the stator winding resultant magnetic field, and implementing servo startup using the maximum torque as constant starting torque;(4) after the zero-point signal of the photoelectric encoder occurring, switching to servo operation with normal constant torsion.

本发明直流无刷伺服电机试探启动方法,采用如下步骤:(1)增量式光电编码器上电后对定子绕组采用相同的时间间隔两两通电,顺序产生六个方向的定子绕组合成磁场;(2)由增量式光电编码器检测出转子在相同的微小时间间隔内分别转过的六个不同的角度;(3)从转子六个不同的角度中选出最大正值的转角,确定相应定子绕组合成磁场对应的最大转矩,并以该最大转矩为恒定启动转矩进行伺服启动;(4)当增量式光电编码器零点信号出现后,切换为正常恒转矩伺服运行。

For example, constant modulus of levy and the increments of a Wiener Process all depend on this inequality.

关于Wiener过程增量的尾概率的估计不等式在讨论Wiener过程增量的性质中十分有用,像Levy连续模定理及Wiener过程增量有多大的证明都依赖于这一不等式。

In Jan09 ABC saw new loan of Rmb100bn. 3 CCB: Feb09 new loan was Rmb100bn, including Rmb50bn from bill discounting. In Jan09 CCB saw new loan of Rmb250bn.

农行1月信贷增量约为1000亿元。3)建行:2月贷款增量为1000亿元左右,其中票据贴现增量为50亿元。1月份建行新增贷款2500亿元。

The results of calculations showed that the maximum increments in saltation height and horizontal distance due to the Magnus force were 10.2 and 24.9%, respectively, and that both increments increased with increasing lift-off angle. The maximum increments in saltation height and horizontal distance of sand grains caused by the Saffman force were only 4.6 and 3.7%, respectively. The vertical concentration distribution of Aeolian sand flow follows exponential function distribution whether or not force analysis of saltating sand grains includes Magnus and Saffman force. The effect of Magnus and Saffman force on the vertical concentration distribution of Aeolian sand current makes the rate decrease near sand bed and it is consistent with the effects of Magnus and Saffman force on the saltation height and distance of sand grains.

Magnus力对跃移高度和水平距离产生的最大增量分别可达到10.2%和24.9%,这两个增量均随起跃角度的增加而增大;Saffman力对跃移高度和水平跃移距离产生的最大增量分别为4.6%和3.7%;是否考虑Magnus与Saffman力,风沙流垂向质量百分浓度均服从指数函数分布,Magnus与Saffman力使得风沙流垂向质量百分浓度较不考虑它们的作用呈现出底层的比例较小,上层较大,Magnus与Saffman力对跃移高度的影响基本与其对风沙流垂向质量分布的影响一致,不过Magus力对风沙流垂向质量百分浓度分布影响较大,0-2cm范围内尤为强烈(7.16-10.81),其他高度层(2-20 cm)的影响相对较小(0-2.95)。

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The strong ionospheric disturbances caused by the significant magnetic storm appeared on the whole world.

用欧亚大陆地面电离层垂测站资料考察1989年3月12~16日磁暴期间的电离层暴形态及其发展变化。