The oblique sounding is one of the powerful tools, by which an oblique ionogram is obtained with the group path or time delay against operating frequency.

斜向探测是电离层探测的主要方式之一，它能够获得电波传播群时延和频率关系的电离图。

youdao

This platform can simulate the ray tracing for a fixed frequency or sweeping frequencies, also can calculate the group path and the covered region of rays.

该平台可实现定频或扫频射线轨迹演示，计算各射线群路径，覆盖区域等功能。

youdao

An oblique Ionogram is a plot showing the group path or time delay against operating frequency when using swept frequency obliquely sounding between the transmitting and receiving site.

在已知固定地面距离的发射站和接收站之间的扫频斜向探测技术能够获得电波传播群时延对频率关系的斜测电离图。

youdao

The path leads past an open field covered with huge rocks, through a group of tall spruce trees, and past a field of blueberry bushes.

VOA: special.2009.07.20

Going home,he crossed a little path darkened by a group of trees.

VOA: special.2009.11.14

But he was soon vindicated in the eyes of most Peruvians by the capture of the leader of the main rebel group, the Shining Path.

BBC: Alberto Fujimori in file photo from 1999

Republic of Ireland, who are managerless like England, must negotiate a path in a group containing defending champions Italy and Cyprus - to whom they suffered an humiliating 5-2 defeat during their unsuccessful qualifying campaign for Euro 2008.

BBC: England to face Croatia rematch

Walkers' pressure group Ramblers says that having a complete path looping the Isle of Wight would boost the local economy, citing the popularity of existing walking festivals which bring more than 20, 000 visitors to the island annually.

BBC: Isle of Wight coast path calls criticised by landowners