单词	echo wall
释义	echo wall 回波墙
随便看	quick acting switching-over quick acting switching over quick-acting switch machine quick-acting valve quick acting voltage regulater quick acting voltage regulator quick-acting voltage regulator quick-acting watertight self closing quick-action quick action quickaction quick-action air brake quick action air reservoir quick-action binder quick-action bow quick action chamber quick action closing device quick action contact quick-action contact quick-action cylinder cap quick action cylinder cap quick-action fuse quick action fuse quick-action hydraulic coupler quick action slide tool 命蹇时乖命辞遣意命途多舛命里注定呾呿呿4 咀咀1 咀3 片霎片面片面性片麻岩版版主版位版刻版口版号