PTAE 4A AE monitor system was developed for monitoring the fatigue crack propagation on aircraft structure. And a study on its practical application was carried out.
为实现飞机结构的疲劳裂纹动态监控,研制了PTAE- 4A机载声发射监测系统,并作了随机机载应用研究。
Field experiment was carried out to investigated nitrogen absorption, quality and yield between high-starch and common com as affected by nitrogen application.
采用田间试验研究氮肥用量对高淀粉玉米和普通玉米吸氮特性及子粒品质产量的影响。
An approach to manufacture and application of pyrolysis graphite was carried out. OPtium process of manufactured pyrolysis graphite, property and application field of pyrolysis graphite was expounded.
对热解石墨的制造与应用进行了探讨,综述了制取热解石墨的最佳方法,特性及应用领域。
应用推荐