variation of speed

Objective To cross-sectionally investigate the age-related variation of speed of ultrasound ( SOS) at distal radius in men from Guiyang urban area in China, and to establish the reference database for diagnosing male osteoporosis ( OP) by quantitative ultrasound ( QUS).

目的探讨贵阳市区健康男性人群桡骨超声速率（SOS）的变化趋势，建立定量超声（QUS）诊断男性骨质疏松（OP）的参考数据库。

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To use frequency variation to regulate the speed of navigation lock gate, reducing the gate crush due to improper position of the position limit switch and enabling the lock gate more stable in speeding up and down.

在船闸闸门调速中采用变频调速，减轻了闸门因限位开关位置不当等原因造成闸门碰撞，使闸门运行中加减速更加平稳。

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Brief Introduction of Principle of Stepless Speed Variation Gear Transmission

齿轮无级变速器原理

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Objective To cross-sectionally investigate the age-related variation of speed of ultrasound ( SOU) at tibia in women from Changsha area in China, and to establish the reference database of diagnosing osteoporosis ( OP) by quantitative ultrasound ( QUS).

目的横断面调查长沙地区女性胫骨超声速率（SOU）随年龄的变化，建立定量超声（QUS）诊断骨质疏松（OP）参考数据库。

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This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation;

本文对双极性调制的无刷直流电动机仿真，分析了转速和调制频率对转矩影响；

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The cutting experiments are carried out to study the variation of turning force, cutting temperature and surface roughness with different cutting parameters during high speed dry turning hardened steel with the ceramic cutter.

通过改变高速车削淬火钢（Cr12）的切削用量，对切削力、切削温度、加工表面质量等进行了较为系统的研究。

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The structure of grinding wheels can realize high point grinding, and the good grinding equiprobability lies on a proper spinning speed and the random variation of the spinning axis.

砂轮本身的结构特点可保证高点磨削的实现，而磨削等概率性则依赖于：生坯球合适的自旋速度及自旋轴方向的随机变化。

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Any variation of printing speed will influence the reappearance of printing color.

摘要印刷速度的变化会引起油墨转移率的改变,进而引起墨色深浅的变化.

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The characteristic of diurnal hourly wind speed variation has been thoroughly analyzed.

该文简述了短期风速预测的价值和方法,分析了小时风速的日变化特点.

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