摘要: 计程仪航程(distance by log)是指船舶航行中计程仪的前后两次读数差，经修正计程仪改正率后的航程。用代号SL表示。
基于44个网页-相关网页
计程仪航程偏小 under logging
计程仪航程计算器 log clock
水压计程仪航程指示器 pressure log distance indicator
计程仪计算的航程 distance by log
计程仪航速航程复示器 repeater log
多普勒计程仪是根据声波在水中的多普勒效应原理而制成的一种精密的测速和计算航程的仪器，它是船用导航设备的重要组成之一。
Doppler log is a precise instrument, which is used to measure ship velocity and calculate its voyage on the theory of Doppler Effect of sound wave in water.
它与电磁计程仪比较具有测量精度高；能够测量绝对航速、航程；能够测量船舶横向移动速度等优点。
With the electromagnetic Log compared with high accuracy, to measure absolute speed, range, to measure the ship horizontal speed advantages.
当水深较深超过其跟踪水深时，计程仪只能对水层跟踪，测量相对水层的航速、航程。
When water deeper than its depth tracking, Log on only water tracking, measuring the relative speed of the water layer, the voyage.
应用推荐