projections投影图projectionn.投影；投射；规划；发射；凸出物；预测；放映projection kinescope投影显象管projection electrode突出电极projection detection投影检测projection alignment投影对准projection televison投影电视projection microscop投影显微镜projection optimeter投影光学比较仪projection magnifier投射放大镜projection objective投影物镜projection algorithm投影算法