n. deflection
挺度：挺度是衡量纸和纸板耐弯曲的强度性能。
Stiffness: It is a measure of the bending strength of paper and board.
电弧挺度好，热量集中，填丝容易，特别适宜自行车等行业的填丝焊接。
Stiff arc, with heat concentrated, easy to fill welding wire, so especially suitable for wire filling welding in bicycle area.
电弧挺度好，热量集中，填丝容易，特别适宜自行车等行业的填丝焊接。
Arc stiffness and heat concentration filled wire easily, especially suitable for bicycles and other industries to fill the welding wire.
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