matching conditions的用法和樣例：
例句
- The time entanglement arises from the energy conservation in the down-conversion process,which is expressed by the frequency matching condition.
時間糾纏來源於下轉換過程中的能量守恆，下轉換過程可以通過頻率匹配條件來表示。 - The quasi-phase-matched conditions of collinear and noncollinear optical parametric generator are analyzed and the deflection angle is achieved.
分析了共線和非共線光學參量產生器的准相位匹配條件，得出滿足准相位匹配條件的光偏折角。
