赤道

And they sent to him their disciples with the Herodians, saying: Master, we know that thou art a true speaker, and teachest the way of God in truth, neither carest thou for any man: for thou dost not regard the person of men.

他们遂派自己的门徒和黑落德党人到他跟前说：「师傅，我们知道你是真诚的，按真理教授天主的道路，不顾忌任何人，因为你不看人的情面。

From the performance perspective, the impeller less efficient, only about 70% of normal closed impeller around, lift curve flat.

从性能上讲，该叶轮效率较低，仅相当于普通闭式叶轮的70%左右，扬程曲线比较平坦。