特殊用法aviation chronometer1.航空表, 航空计时器balance-spring chronometer1.摆轮游丝精密时计board chronometer1.天文钟, 航海表box chronometer1.盒式航海钟, 天文钟; 经纬仪crystal chronometer1.石英钟(表), 石英计时器digital electronic chronometer1.数字式电子精密钟表electron chronometer1.电子计时器marine chronometer1.航海天文钟, 船钟pocket chronometer1.天文怀表railroad chronometer1.铁道(部门)计时器wrist chronometer1.天文精密计时仪(经天文台或公立检验站检查并符合一定标准的手表)