【建筑】深井活塞泵【机械工程】深井活塞泵

be deep in thought

deep freeze

deep petrosal nerve【解剖】;nervus petrosus produndus【解剖】

deep sleep wave

North Atlantic Deep Water\nNADW\n海洋

bucket deeply embossed【粮食】;deep type bucket【粮食】

rotary drill bit (rotary boring head) deep drilling

deep ploughing【农】;deep plowing【农】