直接喉镜检查[法]

以直达式喉镜发现声门狭窄与广泛性溃疡坏死组识。

direct labor hour rate

direct impact

direct cruuent arc welder

separating artificial filaments in direct spinning

high speed direct readout latexometer

Direct Blue 2B

direct lithography【印刷】

Excision and graft bypass or direct repair A-V fistula of chest or abdomen