1.
Power Factor = bullet weight (grains) X velocity (feet per second) /1000
威力系数＝〔弹头重量(公克)X枪口初速(每秒英尺)〕／1000
2.
Thirty two feet per second, per second.
每秒三十二英尺，每秒钟。
3.
A bullet goes from this gun with a velocity of 3000 feet per second.
此枪射出的子弹, 其速度为每秒3000英尺。
4.
The force of gravity is such that it produces an acceleration of about 32 feet per second for every second that an object falls.
重力使物体每降落一秒钟产生大约每秒32英尺的加速度。
5.
A plasma cutter uses an electrode circuit to spark a stream
等离子切割机使用电极电路产生每秒2万英尺
6.
A volumetric unit for measuring the flow of liquids, equal to one cubic foot per second.
立秒一种测量液体流量的体积单位，等于立方英尺每秒
7.
A unit of acceleration equal to the acceleration caused by gravity at the earth's surface, about9.8 meters(32 feet) per second per second.
重力加速度的符号与地球表面重力加速度相等的加速度符号，约为9。8米（32英尺）每秒每秒
8.
Maximum continuous flow based on pipe line velocity of 20 ft. per second.
最大持续流量以管路流速每秒20英尺为计算基础。
9.
Maximum intermittent flow based on pipe line velocity of 25 ft. per second.
最大间歇流量以管路流速每秒25英尺为计算基础。
10.
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。
11.
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。
12.
Orville flew it for 12 seconds and went 120 feet.
奥维尔驾着它飞行了12秒，航程120英尺。
13.
Typical maximum system flow rate (7.5 feet/sec.
标准最大系统流量为7.5英尺/秒。
14.
Plant in rows two feet apart.
每隔两英尺种一行.
15.
Cycles per second.
每秒周数，周／秒，赫
16.
The seconds are counted off like the tenths of a mile on the meter of a car.
秒数是每10秒一报，就象小汽车里的里程表每1/10英里一报一样。
17.
Light travels in straight lines at 186 000 miles a second.
光以每秒186 000 英里的速度直线传播。
18.
"Now light travels at 186,000 miles per second. "
光速是每秒钟十八万六千英里。