词典释义：
贝特
Having excellent cold resistance, it enjoys bett tightness in wide temperature range, besides, it has good ozone resistance weather resistance and aging resistance.
耐寒性能优异，在较宽的温度范围内均能发挥良好的密封性能，耐臭氧性能好，耐侯性与耐老化性能优异。
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