【化】 对照试验; 核对试验

check, buy the bill, pay the bill

check out

final check

cross-check

alar ligaments【解剖】;check ligament【解剖】;ligamenta alaria【解剖】

by-pass check valve (free-wheeled checkvalve)

by-pass check valve (free-wheeled check valve)

leak test【试验】;leakage check test【电子】