单词	单调低音
释义	双向☞单调低音--持续低音双向☞持续低音--单调低音
随便看	ship-board shipboard shipboard artillery shipboard automation system shipboard cable shipboard expendable bathythermograph shipboard expendable bathythermograph (sxbt) shipboard launch shipboard launching shipboard low smoke toxicfree calbe shipboard management shipboard missile shipboard oil pollution emergency plan shipboard pairtwisted telephone cable shipboard radio frequency cable shipboard raingauge shipboard repair shipboard sonar shipboard spectrophotometer shipboard-type motor shipboard uniform automated data processing system shipboard uniform automated data processing system，suadps shipboard wind plotter shipborad flexible coaxial cable shipborad power cable