现有气门铰刀是固定的，一套铰刀的刀头(刀盘)多达十多只。

The existing valve reamer is stationary, and more than ten bits (cutter heads) of one set of reamers are arranged.

youdao

现有气门铰刀是固定的，一套铰刀的刀头(刀盘)多达十多只。

The existing valve reamer is stationary, and more than ten bits (cutter heads) of one set of reamers are arranged.

youdao