main box

In order to save water and use dripping head with a bigger hole which has good ability to anti blocking, a new siphon controlling device consisted of a main box and an auxiliary box is installed in an impulse water supplying dripping system under the pressure of water gravity.

为使自压式滴灌系统省水、滴头抗阻塞，在自压式滴灌系统中安装了一种新研制的具有主箱和副箱相结合的脉冲供水虹吸式滴灌控制装置。

This paper discusses whether use the structural adhesive bonding to make the transmission main box into one unit.

针对传动装置主箱体能否应用结构胶接组合成一体进行了探讨,并详细阐述了胶接过程中的主要技术难点。

Research methods:The weight value of the first and the secondary influence factors is determined to line container yard loading and unloading craft of railway network .

研究方法:运用层次分析法(AHP)确定集装箱中心站主箱场装卸工艺方案的影响因素及子因素的权重。