facial feature point detection的用法和樣例：
例句
- The principle and the basic structure of the leak detection and location system for water pipelines are introduced.
介紹了自適應供水管網泄漏檢測及漏點定位的基本原理及儀器系統的構成。 - The proper leakage localization domain was derived by using the inequality.The numerical algorism for leakage point localization was improved.
由不等式推導出準確的泄漏點搜索區間，改進了泄漏點定位的數值計算方法。
