keep-off shade是什么意思

网络释义

用法例句

In order to enhance the sufficient effect and the metering quantity of suction seed metering device,the regulative keep-off shade of seed room and the appropriate mechanism structure were designed on the basis of analyzing the structure and basic principle of suction seed metering device.

为了提高气吸式排种器的充种效果及排种质量,在分析气吸式排种器结构和基本工作原理的基础上,设计了充种室种面调节挡帘,并改进了充种室结构。

The simple analysis of the safety margin of the flexible bumper in the decline rail travel;

斜井轨道运输挡车帘安全度浅析