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。
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.
内环与轴用键联接，外环尺寸公差为h 7与公差为h7的机壁配合，外环两侧端面键用于固定外环与机壁以传递扭矩。
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.
内环与轴用键联接，外环尺寸公差为h 7与公差为h7的机壁配合，外环两侧端面键用于固定外环与机壁以传递扭矩。
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