The method of calculating the reflection point positions and path clearance of the electric wave at the level ground and mountainous region for the microwave relay communication is described.

本文叙述在微波中继通信中，确定和计算电波在平坦地面和起伏山地的反射点位置及路径余隙的方法。

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The method is especially useful when line-of-sight clearance cannot be obtained above the surface of the earth for the propagation path.

这种方法在传播路上对不能在地表面上获得视线余隙时特别有用。

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An analysis of the effect of tooth path and optimum clearance Angle on tool life in the up milling and down milling processes is presented.

本文分析了铣削轨迹及合理后角对顺铣与逆铣中刀齿耐用度的影响。

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Longtime Chelsea target Willian leveled in the ninth minute but fellow Brazilian midfielder Oscar gave the home team the halftime advantage with a superb long-range volley after Pyatov - racing out of his area -- headed a clearance straight into his path.

CNN: Barca's unbeaten run ended by Celtic