1.
In this paper,using a new principle of PWM and the teehnique of storage system in a microcomputer are deseribed,and a 25Hz sinusidal bell current source has been developed.
本文介绍了采用新的脉宽调制原理和微电脑技术,研制出的25赫正弦波铃流源.
2.
In this paper, using a new principle of PWM and the technique of storage-system in a microcomputer are discribed, and a 25 Hz sinusidal bell current source has been developed.
本文介绍了采用新的脉宽调制原理和微电脑技术,研制出的25赫兹正弦波铃流源。
3.
Study of PWM sinusidal bell current signal source
脉宽调制型正弦波铃流信号源的研究
4.
Study on Relationship among Source, Current, and Sink , and How to Improve the Ability of Forming Mini-tubers of Aeroponics Potato;
雾化栽培马铃薯源流库关系及提高其结薯能力的研究
5.
This blog ring tones are all derived from the network, the exchange of personal use only, do not used for commercial purposes, offenders responsibility conceited.
本博客所有铃声均来源于网络，仅供个人交流使用，请勿用于商业用途，违者责任自负。
6.
Effect of Exogenous Regulating Substances on Cotton Fruiting;
外源调节物质对棉花成铃的调节效应
7.
Evaluation of Plasmgerm Resources from CIP in Qinghai Province
青海引进CIP马铃薯种质资源评价
8.
Study on Provenances-family of Platanus occidentalis
北美一球悬铃木种源-家系试验研究
9.
Ringing and tone for telephone automatic switching network
GB3380-1982电话自动交换网铃流和信号音
10.
a bell activated by the magnetic effect of an electric current.
由电流的磁效应作用的铃。
11.
Expression of H5HA Avian Influenza Virus Gene in Potato Plant
禽流感病毒H5HA基因在马铃薯中的表达
12.
Introduction,evaluation and utilization of potato genetic resources from international potato center(CIP)
国际马铃薯中心资源材料的引进、评价及利用
13.
Rearch on Edible Transgenic Potato Vaccine of Human Rotavirus;
人源轮状病毒的转基因马铃薯口服疫苗研究
14.
The Effects of Source-sink Regulation on the Tuberization Capability of Aeroponics Potato;
源库调控对雾培马铃薯结薯性能的影响
15.
Effect of Combined Exogenous Regulating Substance on Cotton Bolling;
棉花成铃的组合外源调节物质调节效应研究
16.
Oviposition-Deterring Pheromone(ODP) Originated from Larval Frass of Cotton Bollworm, Helicoverpa Armigera (Lepidoptera: Noctuidae);
源于棉铃虫幼虫粪便的产卵忌避信息素的研究
17.
Studies on Genetic Diversity of Potato (S.tuberosum L.) Germplasm Resources;
马铃薯（S.tuberosum L.）种质资源的遗传多样性研究
18.
Study on Effect of Exogenous Hormones on Forming Mini-tubers of Aeroponics Potato;
外源激素对雾化栽培马铃薯结薯的影响研究