silent stock tube

• 塑料管

silent stock tube的用法和样例：

例句

1. The new winter ventilation system consisted of a perforated plastic tube.
   新的冬季通风系统由带孔的塑料管组成。
2. The shape of the die decides the shape of the extruded plastic-a fibre, perhaps, for use in nylon thread, or a tube.
   模口的形状决定了挤出塑料产品的型状，如制尼龙绳用的纤维丝或塑料管。