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1. Our product has the hand pump, to tread on the air pump, the miniature air pump, the air pump fitting, the bicycle saddle place, the mountain bike saddle place.
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2. A saddle-shaped hole grooving machine for pressure vessel was introduced. A method for processing saddle groove and the designing of a technical background were put forward.
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3. Our product has the hand pump, to tread on the air pump, the miniature air pump, the air pump fitting, the bicycle saddle place, the mountain bike saddle place.
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4. Of course, transition state is the first-order saddle point on the potential energy surface. intermediate is intermediate is the zero-order saddle point on the potential energy surface.
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5. An equivalent proposition of saddle point and a saddle point theorem in the sense of strict efficiency are given.
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