The round of the hole exit is equipped with wire needle of down-bellmouthing type outwardly.

小洞出的边缘一圈向外插有倒插状的钢丝插针，老鼠过得去可回不来。

Besides, experiment on the pressure loss of the improved accumulator with L-Tube with the evase inlet shape was done.

后的L-Tube为形的储液罐也做了试验研究。

The saxophone has a single reed mouthpiece like a clarinet , a conical brass body like an ophicleide, and a metal body with a flared bell .

萨克斯风外形上有著跟竖笛一样的单簧吹嘴，黄铜色的身形又像低音大号，以及金属制成的。