Plastic Screw-On File Handles 塑料螺丝上文件句柄
If you're planning on drinking these bottles in the near - to mid-term, or if the bottles have alternative closures (screw caps, glass or plastic corks), this is not necessary.
如果你计划近期或中期就喝这些酒，或者这些酒瓶用的不是软木塞(螺旋塞、玻璃塞或塑料塞等)，你就不需要把酒瓶平放。
The main use of plastic material itself insulation, small density, no electromagnetic interference, corrosion resistance, waterproof performance, so as to realize its protective effects on screw.
主要利用塑料材料本身的绝缘、密度小、无电磁干扰、耐腐蚀、防水等性能，从而实现其对螺丝的保护作用。
The invention is characterized in that the invention includes a flywheel and a plastic fan blade which is tightly fixed on the screw hole of the flywheel by a bolt.
特征是包括飞轮、塑料风叶轮，塑料风叶轮用螺栓紧固在飞轮的螺孔上。
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