单词	坠痛
释义	坠痛bearing pain
随便看	dual tone multi frequency，dtmf dual-tone multiple frequecny dual tone multiple frequency dual-trace dual-trace amplifier dual-trace oscillograph dual-trace oscilloscope dual-trace--oscilloscope dual-trace theory of memory encoding dual track dual track recorder dual traverse barograph dual tree dual trigger contract dual triode dual trip system dual type highway dual type switch board dual-use line dual valuation dual valuation clause dual valuation {= d/v} dual valve dual variable dual variables