中点

Finally,this paper discusses the problems of neutral point control that exists in the three-level inverter, and adopts two methods to control neutral voltage balance namely judging power direction and detecting instantaneous current value.

最后论文还对多电平逆变器存在的中点电位漂移问题进行了讨论，并采用两种方法来实现中点电压平衡，即判别逆变器功率流向法和检测瞬时电流值方法。

The concept of the midpoint quasi-convex function is introduced, and some conditions are obtained to ensure that midpoint quasi-convex function is quasi-convex in the measurable function space.

本文提出了中点拟凸函数的概念，在可测函数空间中，给出了中点拟凸函数拟凸的若干个充分条件。

Results:The distance from the front wall of sphenoid sinus to the nasal spine was 56.5±5.9 mm for left and 54.9±7.2 mm,44.3±6.5 ,,for left and 44.0±6.5 mm for right to nasion.The average distance from middle point of sphenoid saddle bottom to nasal spine was 74.5±6.4 mm for left and 73.8±6.8 mm for right,60.9±7.2 mm and 60.2±7.8 mm to nasion.

结果：前鼻棘至蝶窦前壁的平均距离：左侧：56.5±5.9mm；右侧：54.9±7.2mm；鼻根点至蝶窦前壁的平均距离：左侧：44.3±5.6mm；右侧：44.0±6.5mm；前鼻棘至鞍底中点的平均距离：左侧：74.5±6.4mm；右侧：73.8±6.8mm；鼻根点至鞍底中点的平均距离：左侧：60.9±7.2mm；右侧：60.2±7.8mm。

The average distance from middle point of sphenoid saddle bottom to nasal spine was 74.5±6.4 mm for left and 73.8±6.8 mm for right,60.9±7.2 mm and 60.2±7.8 mm to nasion.

结果：前鼻棘至蝶窦前壁的平均距离：左侧：56.5±5.9mm；右侧：54.9±7.2mm；鼻根点至蝶窦前壁的平均距离：左侧：44.3±5.6mm；右侧：44.0±6.5mm；前鼻棘至鞍底中点的平均距离：左侧：74.5±6.4mm；右侧：73.8±6.8mm；鼻根点至鞍底中点的平均距离：左侧：60.9±7.2mm；右侧：60.2±7.8mm。

In view of the principle of pointbypoint comparison method, the foundation deciding whether the middle point interpolation is the control step error of NC system has been advanced, the math mould of inserting and compensation method established and the function that judges error by interpolating method has been improved.

基于逐点比较法原理，提出中点插补算法作为数控系统控制步进的偏差判别依据，建立了插补算法的数学模型，对插补算法偏差判别函数进行了改进和完善。实例分析结果表明，中点插补算法使插补精度由原来的小于等于一个脉冲当量提高到小于等于 0 。5个脉冲当量，插补点大幅度地下降，系统的响应速度加快和插补精度提高

In cases where a third planet lies at the midpoint of the first two we just considered, a "planetary picture" is formed. On page 54 of the German anthology "Man: A Receiving Station of Cosmic Influences", Alfred Witte wrote: A planetary picture is formed by three planets when one of them is located at the midpoint of the other two.

在一些例子里面，当第三颗行星正好落在两颗行星的中点上时，我们认为行星的图像已经形成了，在德国人的占星学书籍里面写到"人：宇宙影响力的接收站"怀特写到当一颗行星落在另外两颗行星的中点上时，三颗行星形成了一个行星图像。

The midpoint of PR is on the x-axis and the midpoint of QR is on the y

PR 的中点在 x 轴上而 QR 的中点则在 y 轴上。

The molecular structure and the electrostatic potentials at the midpoints of C-NO2 bonds and C-CH 3 bonds for seven nitrotoluene explosives were calculated by ab initio method.

利用HONDO程序包，采用从头计算法对硝基甲苯类炸药的分子结构及其C-NO2键中点的静电势进行了计算，讨论了硝基甲苯类炸药C-NO2键中点的静电势最大值Vmidmax与其实验撞击感度之间的关系。

Results the first segment of vertebral artery track in the osseofibrous sheath; the outside diameters at the middle point of this artery segment were 3.63±0.85mm and 3.12±0.74mm in male but 3.03±0.53mm and 2.98±0.84mm in female.the lengths of this artery segment were 61.20±6.80mm and 61.60±5.30mm in male but 59.70±5.80mm and 58.30±8.10mm in female.

结果 椎动脉横突段走行在骨纤维鞘内，中点外径男性左侧为(3.63±0.85)mm、右侧为(3.12±0.74)mm，全长左侧为(61.20±6.80)mm 、右侧为(61.60±5.30)mm；中点外径女性左侧为(3.03±0.53)mm 、右侧为(2.98±0.84)mm；全长左侧为(59.70±5.80)mm 、右侧为(58.30±8.10)mm。

The neutral-point unbalancing problem is analyzed and the control strategy is proposed which can inhibit the neutral-point shift.

对多电平变流器中的中点电位不平衡机理进行分析，提出一种能有效抑制中点电位偏移的控制算法。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。