2) signal dotting
信号打点
1.
In view of the limitation of signal dotting and phonetic communication device used for coal mine,a kind of flameproof signal dotting and phonetic carrier-current communication device especially suited to satisfy the current needs of modernization mine production with high-capacity and high-efficiency is designed,its effects and performance has been validated.
针对目前煤矿使用信号打点、语音通讯装置存在的缺陷,设计出一种能适应当前高产、高效现代化矿井生产需要的煤矿隔爆型信号打点、语音载波通讯装置,其功效和性能已得到验证。
3) print signal
打印信号
4) semaphore
[英]['seməfɔ:(r)] [美]['sɛmə'fɔr]
打手旗信号
5) knock signal table
敲打信号表
6) waft
[英][wɔft] [美][wɑft]
用旗打信号
补充资料：打点
①整理；准备：打点行李，准备上路。②旧时指为求照顾而送礼：往衙门打点差役。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条