短語詞組短語bearing trajectory course 承軌梁ground bearing pressure course 地面圬工層bearing g course 承重層ground bearing pressure course converter 航向變換器constant -bearing course [航][水運]定向航線;[航]等方位航線constant bearing course 固定方位航路bearing course for foundation 地基持力層bearing course at pile end 樁端持力層bearing course 's rock surface 持力層巖面 返回 bearing course