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(3) Dental surface contact area is large, and there is instant dual line contact, the total length of the contact line is extended. (3) Dental surface contact area is large, and there is instant dual line contact, the total length of the contact line is extended. (3) Dental surface contact area is large, and there is instant dual line contact, the total

(4) Lubrication angle ye dɔɔni, ye kɛnɛya ye kɛnɛya ye kɛnɛya ye kɛnɛya ye kɛnɛya ye kɛnɛya ye kɛnɛya ye kɛnɛya ye kɛnɛya ye.

Plane secondary envelope reducer is designed and manufactured according to the Chinese People's Republic machinery industry standard JB/T90501-1999 "Plane envelope envelope surface snail reducer", its permitted work rotation speed does not exceed 1800rpm, snail can be positive, reverse rotating, working environment temperature tail - 40 ℃ ~ + 40 ℃, can be widely used in metallurgy, mining, lifting, transportation, chemical, building and other various mechanical equipment.