ppm
英 ['pi:p'i:'em] 美 ['pip'i'em]

abbr.

part per million 百万分之…；

英英释义

PPM

• PPM is an initialism that can refer to any of the following in this list:

以上来源于:Wikipedia

权威例句

70 000 PPM-sparare flyttas till statliga Såfan
Implementing the PPM data compression scheme
Unbounded length contexts for PPM
Pensionsmyndigheten slänger ut PPM-jätten
A 2-V 23-μA 5.3-ppm/°C curvature-compensated CMOS bandgap voltage reference
The inflammatory effects of 2 ppm NO2 on the airways of healthy subjects.
A 2-V 23-/spl mu/A 5.3-ppm//spl deg/C curvature-compensated CMOS bandgap voltage reference
Performance evaluation of TH-PPM UWB systems in the presence of multiuser interference
Role of accurate mass measurement (+/- 10 ppm) in protein identification strategies employing MS or MS/MS and database searching.
Parametric drive of a toroidal MEMS rate integrating gyroscope demonstrating < 20 PPM scale factor stability