船舶: shipping; boats and ships; v ...到: 39数: frequently; repeatedly率: rate; ratio; proportion船舶到达: arrival of ship船舶到港确报: definite time at arrival船舶到港通知: arrival notice; notice of vessel's arrival船舶到港预报: expected time of arrival船舶到达时付款: payable on arrival of steamer船舶到达及离开报告: vessel arrival and departure report数率: numerical ratio计数率: count rate; counting rate; cr指数率: index percent到数计时: countdown到数据信号: dtms接收到数据: received data present模拟到数字: analog to digital; analog-to-digital收到数量: quantity received说到数目时: when numbers are said and is used between the hundreds and any digits that follow船舶: shipping; boats and ships; vessel; watercraft; water-dipper到数字转换器: pwdc pwm to digital convertor pwm得到数据目录: data dircetory模拟到数字的: ad; analogtodigital本底计数率: background counting rate本底记数率: background counting rate