checkage of projection distance  投射距离核定

close distance projection  近距离投照法

projection distance  投影距离; 放映距离

Modern distance education project  农远工程

Resources of the modern distance education project  农远资源

L2-projection and H1-projection meth-ods  L2-投影及H1-投影方法

orthographic projection to be transferred into perspective projection  正投影转换成透视投影

projection law of axonometric projection  轴测图的投影规律

distance between centres of lines；distance between centers of tracks；midway between tracks  线间距离

distance offset distance  偏距

193 nm projection lithography  193 nm投影光刻; 193nm投影光刻

1D projection  运动估计

1-D projection correlation  一维投影相关

2-D back-projection  二维反投影

2D projection  二维投影

2D re-projection error  平均二维反投影误差

3 dimension maximum intensity projetion  三维最大密度投影

3D projection  三维投影; 三维映射

3D projection location arithmetic  空间投影定位算法; 极性交替反转码

3D projection technique  三维投影技术