The spokes are inserted through the center of a sliding block and the sliding block slides along the spokes radially. The secondary shaft and the sliding block are connected by a chainbar.
滑块由轮辐从中间穿入并沿轮辐径向滑动，副轴和滑块之间用链杆连接。
2
After all, the chain and T-bar fastening had not really advanced for 50 years.
毕竟，这个由链子和T型铁组成的连接物品已经有50年没有进步了。
3
"We were sampling with the largest chain saws we could find — a chain-saw bar of seven feet," he said.