In regions near the dilution orifices, countercurrent flow against the swirl velocity is produced, which is beneficial to the gas mixing. 掺冷孔空气射流使得切向速度局部产生逆流，有助于气流混合。
In this sense the astrometry and radial velocity planet-hunting methods complement each other, each excelling in the other method's blind spot. 从这一意义上说天体测量和视向速度行星搜索法是互为补充的，各自在彼此方法的盲区表现出色。
