basic control point的用法和樣例：
例句
- Usually for a precise survey control points are established by triangulation.
通常對于精確的測量，控制點(diǎn)是根據三角網(wǎng)來(lái)定位的。 - Necessity and measures of installation of control point for engineering quality in overhauling metallurgical equipment.
冶金企業(yè)設備檢修工程中設置質(zhì)量控制點(diǎn)的必要性和措施。
