淬硬的 meaning in English

hard
hrd

Gd linear ball bearings ( drawn cup recirculating ball linear bearings ) are made of punched and quenched outer ring and plastic cage with a set of rolling ball
Gd直线运动球轴承（冲压外圈循环式直线运动轴承），由一冲压且淬硬的外圈和带一组钢球的塑料导引保持架所构成一完整的装配单元，可直接压入座孔内。
As shown in the figure left , the inner ring of the self - contained bearing is hardened in the race - way and surroundings part where hardening is necessary , the area of set screw hole of the inner ring has been templed by high temperature after hardened , it has higher toughness and impact clasticity
如左图所示，内圈沟道及其周围需要淬硬的部分已经过正常淬火，装配紧定镙钉的内圈伸长端则经过高温局部回火而保持韧性及抗冲击性。