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1 PPM - 1 Pulse Per Minute 1分脉冲
His pulse was one hundred beats per minute. 他的脉搏每分钟一百次。
The car runs at a speed of 1 km per minute. 小轿车以每分钟1千米的速度行使。
They spin at 400-500 revolutions per minute. 它们每分钟旋转四百到五百周。
The second category is referred to as Proc Per Minute or "PPM" effects. 触发几率一般有两个类别。
1 PPS - 1 Pulse Per Second 1秒脉冲
On this basis, the Secretary of Labor had set the permissible exposure level for workers at 1 ppm (part per million), which he considered the lowest feasible level. 根据这一点，劳动部长已把工人的允许接触水平规定为百万外之一，他认为这是最低的可行性水平。
1-PPS (1 pulse per second) 秒脉冲
Large Saharan storms may deliver up to 1 millimeter per minute. 大的撒哈拉沙漠暴风雨可以达到每分钟1毫米。
The A300 is economically priced and delivers a rate of up to 165 ppm (packages per minute). A300型经济的价格和提供速率高达百万分之165 （包每分钟）。
Calls to the helpline cost 38p per minute. 打热线服务电话每分钟为38便士。
I was adjusting the pump strokes per minute. 我正在调整泵的每分钟冲数。
Two O-Rings in gland follower provide additional stem seal protection to assure tightness of less than 1 ppm. 密封压盖随动件内的两个O形环为阀杆提供更加安全的密封保护，以确保泄漏率不会超过百万分之一。
How many words can you type per minute? 你每分钟可打多少字?
Antijamming Method for Pulse Per Second Signal in Synchronized Sampling Unit Based on GPS.Automation of Electric Power Systems,2000,24(1):45-47. GPS同步采样装置中防止干扰GPS脉冲信号的措施.;电力系统自动化;2000;24(1):45-47
The ultimate detection level of aripiprazole in serum ranged from 1 ppm to 0.1 ppm. 阿利哌唑的最终浓度变化范围为1ppm到0.;01ppm。
How many words do you type per minute? 你每分钟打多少个字?
Did you know I can type almost 60 words per minute? 你知道吗,我能每分钟打60个字。
The productivity is 30-40 cans per minute. 生产效率每分钟30-40罐。
My typing speed is 100 English words per minute. 我的打字速度是每分钟100英文单词。