原理 [科技] Principle

原则 [科技] Principle

测量原理 [科技] principle of measurement

工作原理 [科技] principle of operation ; [科技] working principle

操作原理 [科技] principle of operation ; [科技] operating principle

基本原理 [科技] basal principle ; [科技] radical principle

标准化原理 [科技] standardization principle