炼苗期烟草苗床是传毒介体有翅蚜着落的靶子中心，是烟田蚜传病毒病的主要初侵染源，为防治烟草蚜传病毒病的关键时期。
During the tobacco hardening period bed of tobacco seedling was the falling target of alate aphids and was the main resource of tobacco virus spread by aphids.
始态可概括为源区、源岩、库岩、矿源层和剥蚀区等，终态可以概括为矿带、矿田和矿床等多个等级体制。
The initial state can be summarized as source region, source rock, reservoir rock, source bed, a denudation area, etc.
应用田口稳健性概念和技术，例如，信噪比、可控因素、噪声因素、对外部波动源的稳健性等。
Apply Taguchi robustness concepts and techniques such as signal-to-noise ratio, controllable and noise factors, and robustness to external sources of variability.
应用推荐