With analysing two physical examples deeply, I m going to correct and explain two realistic ploblems which students meet with when they are studying collegial physics: one is how to understand (F)and d(r) s direction in doing work A=(F)·d(r), another is how to acquire the velocity by using Galilei variable velocity expression (V)=(u)+(V)′.
dr中F和dr的方向问题,另一个是如何正确应用伽利略速度变换V=u+V′求解速度问题。
a unit of gravitational acceleration equal to one centimeter per second per second (named after Galileo).
重力加速度单位等于每厘米（待查表）平方秒（以伽利略的名字命名）。
Nothing was said in the preceding discussion regarding the units in which force, mass, and acceleration are to be expressed.
在前面的讨论中，没有提到力、质量和加速度的单位。
Displacement velocity and acceleration shock response spectrum
位移、速度和加速度冲击响应谱
The velocity of light is too great to be measured in simple units .
光速太快，不能用简单的单位来量度。
Fast High Precision Position Control of Servo System Driven by Linear Motor with High Acceleration;
高加速度直线伺服系统的快速高精度定位控制
The Scala Quautity Relation Discussion of Vilocity,Acceleration and Displacement;
关于速度、加速度与位移之间标量关系的探讨
Expressions and Relationships of the Particle Location, Velocity and Acceleration;
运动学中点的位置、速度、加速度的表示及关系
The real-time estimation of velocity and acceleration from GPS carrier-phase measurements
GPS实时测量速度与加速度的载波相位方法
He began to get the knack of cycling one-handed, and increased his speed.
他熟练地单手扶把骑着车，加快了速度。
Research on the Design of the Single Chip Integration Accelerometer Gyroscope;
单芯片集成加速度计陀螺仪设计研究
Finite element analysis of single dust-collecting plate's rapping acceleration
单块集尘板振打加速度的有限元分析
The speed of light is too great for us to measure in simple units.
光的速度太快，我们用简单的单位无法计量。
a nontechnical unit of force equal to the mass of 1 pound with an acceleration of free fall equal to 32 feet/sec/sec.
非技术性力的单位等于一磅的质点发生自由落体加速度（英尺每平方秒）的力量。
a unit of force equal to the force that imparts an acceleration of 1 foot/sec/sec to a mass of 1 pound; equal to 0.1382 newtons.
力的单位等于使一磅的质点发生英尺每平方秒加速度的力；等于（待查表）牛顿。
a unit of force equal to the force that imparts an acceleration of 1 cm/sec/sec to a mass of 1 gram.
力的单位等于使质量为克的物体产生厘米（待查表）平方秒的加速度所需的力。
The first experiment examined how accentuation influenced on line processing speed during discoursecomprehension, using sentence by sentence auditory moving window technique.
其中实验 1利用以句子为单位的口语动窗法 ,考察了重读如何影响语篇的临场加工速度。
a unit of force equal to the force that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal to 100,000 dynes.
力的单位等于使公斤质量的物体产生米（待查表）平方秒的加速度所需的力；等于，达因。
The Study of Critical Technology of Single Observer Passive Location and Tracking Based Look-acceleration Information and It's Test;
基于视在加速度信息的单站无源定位与跟踪关键技术研究及其试验