他们递给我一个萨克斯管，并迅速地在喇叭口附上了一个麦克风，演奏开始了。
They gave me a horn, promptly attached a mike to the bell, and the music started.
吸入室安装在异径 管的喇叭口端，吸入室的另一端为吸入口。
The sucking room is provided on the bellmouthing end of the reducing pipe, another end of the sucking room is a suction inlet.
采用三转角轧制法轧制厚壁管和相反的操作法轧制薄壁管可消除喇叭口与尾三角。
The end trumpet and end triangle can be eliminated if a rolling process with three angles rotating is used for thick wall pipe rolling and other processes for thin wall pipe rolling.
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