1.
A Modified Windkessel Model and Its Parameter Estimation Based on Photoplethysmograph;
基于PPG信号的Windkessel模型修正及参数估计
2.
Influences of the PPG Operating Mode Based on the Control of Supply Chain;
基于供应链控制的PPG运营模式分析
3.
Eight Problems about the Pro-poor Growth
有利于穷人的经济增长(PPG)的八大问题
4.
targeting signal
引导信号，导向信号
5.
ratio of carrier-to-interfering signal
载频信号对干扰信号比
6.
signal conditioning
信号波形加工,信号修整
7.
The other host of signal are control signals.
另一组信号是控制信号。
8.
analog to digital(A/D)
模拟信号到数字信号
9.
interlocking signals
联动式信号,连锁信号
10.
tropical cyclone signal light
热带气旋信号夜间灯号
11.
a foghorn that makes a two-tone signal.
发出两种信号的雾号。
12.
Sound the retreat, eg by blowing a bugle
发撤退信号（如吹撤退号）
13.
Morse Code light or Morse Code fog signal
莫尔斯灯光或雾号信号
14.
The Study on the Competitive Stretigy of PPG s Architechtural Decorative Coating Business in China;
PPG公司建筑装饰涂料业务中国竞争战略研究
15.
Exploration of Optimal Expression Conditions in Lactobacillus Casei with pPG Vector;
乳酸杆菌pPG质粒表达系统理想表达条件的探索
16.
Research on Advancement of PPG Technology in Cardiovascular Fitness Assessment
PPG技术在心血管适能评定中的应用研究进展
17.
any device or object placed to give people a warning,information,etc
（给人警告、信息等的）信号器或信号物
18.
Research on Algorithms for Blind Source Separation, Signal Construction and FSK Detection;
盲信号分离、信号重构及FSK信号检测算法研究