Aerotropism a tropism in which the orientating stimulus is oxygen.

向氧性：一种刺激方向为氧气的向性运动。

Librarians, as an indispensable part of the whole library, need orientating their roles.

馆员作为图书馆整体不可分割的一部分，角色需要重定位。

More suitable method establishing unit model orientating planning is regression analysis.

提出了建立面向计划装置模型比较合适的方法是回归分析方法；

This paper presents the principle of secondary orientating by approximate tetrahedron for the first time.

本文在国内外首次提出并创建了近正四面体法二次定位原理。

Besides orientating function, the more important function of the navigation in E-learning is to assist learning.

但网络学习中的导航除了定位作用，更重要的是体现导航的学习辅助功能。