短語詞組短語adaptive beam -tracing 自適應(yīng)聲束跟蹤beam tracing theory 波束跟蹤理論sound beam tracing 聲束跟蹤conical beam tracing method 圓錐束跟蹤法ray and beam tracing 聲線和聲錐approximate cone beam tracing 近似圓錐束跟蹤Adaptive Beam Tracing Method 自適應(yīng)聲束跟蹤法Beam Tracing Method 束跟蹤法 返回 beam tracing