Chambering
内腔加工, 扩孔
🗣️ 情景例句
But don't give up.
但是千万不要放弃。
Your question is how we developed our product?
你的问题是我们是如何发展我们的产品？
Yes, the economy model is about 30% less.
是的，经济型的大约便宜30%。