Has the local government taken any measures to inhibit their propagation ?
当地政府有采取什么行动去控制他们的繁殖吗?
Cultivation and propagation techniques of magnolias .
木兰科植物的栽培繁殖技术与方法。
Briefly explain grafting in artificial vegetative propagation .
简述人工营养繁殖的嫁接法.
Empirical formula for propagation loss in land mobile radio services .
移动无线电波传输损耗经验公式。
Atmospheric propagation characteristics of medium-range or short-range laser rangefinders close to ground .
近地面中短程激光测距的大气传输特性研究。
Based on the beam coherence-polarization matrix and the propagation law , the polarization properties of partially coherent flat-topped light beams diffracted through a regular polygonal aperture are studied systematically .