?单面板阀

... 平板 1.(平淡死板) dull and stereotyped; flat; monotonous 写得平板 written in a dull style2.[设计] surface plate3.[生物] plating; 平板玻璃 [材料] plate glass; sheet glass; 平板挂车 flat-bed trailer; 平板卡车 flat bet truck; 平板机 purl machine; 平板结构 plate structure; 平板载货车 flatbed 单面板阀 single sided plate valve; single-sided plate valve 挡翻板阀 flapper valve ...