利用PLC的特殊功能模块技术，较好地实现了电子束流的上升梯度和下降梯度的方便调节。
Adopting PLC special function block technology, it is easy to realize to adjust up step or down step of electronic beam current.
随着海拔梯度的上升，资源植物的区系成分、性状特征表现出相对应的垂直分异规律。
With increased elevation above sea level, the flora components of the resource plants present corresponding vertical differentiation patterns.
越靠近自由表面，底部射流横向发展越窄，而向上的压力梯度，气泡上升速度，底部射流上升高度越大，反之则反；
The more the bubble close to the free surface, the narrower the bottom jet develops crosswise, and the larger the pressure gradient, the rising velocity and the height of the bottom jet is upwards.
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