模数

In front of the A/D converter in an analog conversion system is usually located a sample-and-hold circuit.

在模拟量转换系统中在模/数转换器的前端通常都会有一个采样-保持电路。

Forexample, the absolute magnitude of RR Lyrae stars determined from thedirect and indirect measurement methods splits into fainter and brightervalues, the distance modulus of Large Magellanic Cloud and theestimate of the ages of Globular Clusters based on the RR Lyrae starsand the other indicators of distances are not fully coincided.

例如由直接和间接测定方法决定的天琴RR型变星的绝对星等分成较暗和较亮两类，由天琴RR型变星和其他距离指示器决定的大麦哲伦云的距离模数和球状星团年龄估计并不完全一致。

After converting ,filtering and magnifying for four kinds signal produced by biochemistry enzyme （blood sugar ,lactic acid,cholesterol and acetone body）,the results are converted separately by AID converter of AdμC812, and then displayed on LCD.

送到AdμC812的四路A／D转换口进行模数转移，然后经过相应的运算、处理后在液晶显示器上显示出来。同时还能对测得的结果进行一些常规的实时诊断。

The disadvantage of the milling cutter is that a different cutter must be used,not only for different pitches but also for different number of teeth.

齿轮加工的缺点在于必须使用不同的铣刀，即使模数相同，而齿数不同也应该用不同的铣刀。

Modulus and ply of sun gear and the number of planet gear are the parameter of the main scantling of structure in design of planet gear reducer.

太阳轮的齿数、模数、厚度及行星齿轮的个数是行星齿轮减速器设计中主要的结构尺寸参数。

The number of teeth,modulus and ply of sun gear and the number of planet gear are the parameter of the main scantling of structure in design of planet gear reducer.

太阳轮的齿数、模数、厚度及行星齿轮的个数是行星齿轮减速器设计中主要的结构尺寸参数。

Sodium silicate is an important additive in paper recycling, the modulus of sodium silicate plays an important role in its application.

硅酸钠是一种重要的脱墨助剂，而硅酸钠的模数(产物内的二氧化硅与氧化钠的摩尔数比值)对脱墨过程有重要的作用。

The selections of parameters between point-line meshing gear and involuted gear are different while designed.

点线啮合齿轮的封闭图与齿数z1、z2及刀具参数有关，而与中心距a及模数mn无关。

Calculates the coordinates of the spindle and drive shaft and checking the center distance, determined department spindle must use dislodges the gear.

根据柴油机齿轮室盖的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床；为确保加工精度，采用&一面两销&的定位方案；为实现无级调速，安全可靠，选择液压滑台；根据零件的大小及被加工孔的位置确定主轴箱的轮廓尺寸；由加工工艺选择滚珠轴承主轴，通过计算扭矩确定主轴和传动轴的直径；齿轮的模数是通过类比法确定；齿轮齿数和中间传动轴的位置是由&计算、作图和多次试凑&相结合的办法确定；计算主轴、传动轴的坐标并进行中心距验算，确定部分轴上需采用变位齿轮；轴上的齿轮套、键等零件按轴号选取相应的标准件。

Considering the problems of spurgear precise plastic forming, such as high deformation resistance, poor flowability and especial hardness to fill cant of gear, technological plan was developed based on precise plastic forming technique, successive control principle and consecutive local deformation theory. Moreover, structures of the rolling preform die and the die with up and down wellrounded forcer for stamping-extrusion and bulge-extrusion combining forming were designed too.

因此本文的主要研究内容和结果如下：本文以某种直齿轮：模数m＝2，齿数z＝20，压力角α＝200，变位系数x＝0为对象，针对直齿轮精密塑性成形变形抗力大，流动性差，特别是成形中齿轮角隅部分更加难以充满问题，基于精密塑性成形技术、逐次控制原理以及连续局部变形原理提出了&直齿轮滚轧制坯－镦挤、胀挤复合精成形&的工艺方案，设计了滚轧制坯的模具结构和上下冲头带圆角的镦挤、胀挤复合精成形的模具结构。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。