管坯成形长度对制件形状的影响表现为成形长度增加，制件中部圆筒状长度也增加，而端口部均呈尺寸大致相同的锥形或喇叭形。
The cylindrical length of middle tube becomes increased with formed length, but the edge profile of the tube almost keep the same cone or bell shape.
碱液经扁喇叭形注碱管注进进料管既可以使碱液同柴油均匀混合，又能避免激烈搅动使柴油乳化；
The aqueous alkali is injected into the input pipe through the horn pipe, which makes the aqueous alkali mix with diesel oil homogeneously and the emulsion of diesel oil is avoid.
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