L IRS— this system provides outputs of key navigation parameters such as heading, attitude, and airplane present position.

l 惯性基准系统——此系统输出例如像航向、高度及飞机当前位置等关键导航参数。

youdao

When streaming your site, have key navigation links appear first, in case theuser wants to get to another area in the site.

当展现你的站点的时候，先显示关键的导航链接，以备用户需要进入站点的另一个区域。

youdao

When streaming your site, have key navigation links appear first, in case the user wants to get to another area in the site.

展现站点的时候，先显示关键的导航链接，以便用户需要进入站点的另一个区域。

youdao

The decision to bring the shuttle down came after one of the orbiter's three key navigation tools -- an inertial measurement unit -- stopped working.

CNN: NASA to shuttle: Come home

For a consumer device, the BlackBerry Z10 reaches the baseline, and while it takes a little getting used to, a week or so with the smartphone and the main gestures that replace a hardware key for navigation become intuitive and easily remembered.

FORBES: BlackBerry Has An App Problem With the Z10 and BB10

Not even the customary navigation key changes that Samsung has implemented in US-spec Galaxy phones to avoid uncomfortable comparisons.

ENGADGET: Editorial: The Galaxy S III in the US is giving Samsung a backbone