The grease should be laid on the periphery of seal ring, the inner of ladder-shaped screw thread and chuckring oil channel during installation.
安装时应将橡胶密封圈四周，梯形螺纹内，压环油槽内，中心管外径上涂黄油。
2
In 2011 that will change-dramatically-as a swarm of wannabe nominees chuck their hats into the ring.
2011年的情况将会有戏剧性的变化，会有大批大批的有志参选者加入到这场角逐中来。
3
Though a bit difficult for chuck mounting and adjusting, it is easy maintenance and lower cost by means of the distributor ring bracket to avoid any contact with the power chuck.