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环状间隙
compr. radial clearance
eng.geol. annulus
oil annular clearance
tech. annular space; tubular annulus (双层管子之间或钻杆与孔壁之间的)
环状间隙〈挤出机口模〉
plast. annular slot
环 状间隙
: 3 phrases in 2 subjects
Plastics1
Technology2