The utility model relates to an electric heating device for an oil well which is constituted on an oil tube in the oil well and used for enhancing oilfield recovery efficiency.
一种在油井里油管上构成用以提高油田采收率的采油井电加热装置。
The utility model has the characteristic of safe use of sandwich glass, and also has the effect of enhancing bright colors.
本实用新型既具夹层玻璃使用安全的特性，又具增强色彩鲜艳的效果。
The utility model has the advantages of increasing the thickness of the heat welding parts, enhancing the tensile strength of the heat welding parts and reducing the welding skill requirements.
本实用新型的优点是：增加熔接部位的厚度，增强熔接部位的抗拉强度且降低对焊接技能的 要求。
The utility model increases a plurality of using functions of the product, thereby meeting people's growing needs with an increasing function and an enhancing entertaining effect.
本实用新型增 加了产品的使用性能，功能增多，娱乐效果增强，能满足人们日益增长的需求。
The utility model can send out dulcet sound with the kite and can be used for enhancing the observing ability of physical phenomena and the wind energy utilizing consciousness of children.
本实用新型还可用来增强少儿观察物理现象的能力及利用风能的意识。
The utility model can send out dulcet sound with the kite and can be used for enhancing the observing ability of physical phenomena and the wind energy utilizing consciousness of children.
本实用新型还可用来增强少儿观察物理现象的能力及利用风能的意识。
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