| 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 exact inception of the use of poly tubes in the united states is unknown .
人们并不知道美国开始使用塑料管的确切时间。 |
| 3. | The surgeon connects the plastic tubes (known as cannulae) from the heart-lung machine to the patient .
外科大夫用塑料管（俗称套管）把心肺机与患者连接起来。 |
| 4. | Its competitors such as stone, brick, metal and plastic are all derived from exhaustible mineral sources .
其他竞争性材料如石料、砖、金属和塑料管都是从易被竭尽的矿产资源中提取的。 |
| 5. | 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。 |
| 6. | The leads from the model are most easily made of plastic tubing, which has little tendency to kink or leak and has good bending qualities .
做为从模型引出的导管以塑料管为最方便，用塑料管不会纠结和漏气而且弯曲性能好。 |
| 7. | Thermoplastics pipes - determination of creep ratio
热塑性塑料管.蠕变系数的测定 |
| 8. | Thermoplastics pipes - determination of ring stiffness
热塑性塑料管材环刚度的测定 |
| 9. | Determination of deflection for rigid plastic pipes
硬质塑料管材弯曲度测量方法 |
| 10. | Guide for construction procedures for buried plastic pipe
地下塑料管制造程序指南 |
