Regeneration systems for two melon varieties, Queen and K7-3, were established by tissue culture.
通过组织培养建立了皇后和K7 - 3两个甜瓜品种的组织培养再生体系。
2
The inner race is keyed to the shaft. The outer race has h7 tolerance and should be fitted in housing with a k7 tolerance. Additional side notches provide for positive torque transmission.