进给驱动采用的是交流同步伺服电机，驱动回路是、速度环、电流环三环控制，并通过FSSB总线实现CNC与伺服放大器的通信。

Zedar is a city in Croatia.

2024-01-13 竞赛及其他题库

Black cats are considered to be unlucky in Western culture.

2024-01-13 竞赛及其他题库

Who was the first president to "；pardon"； a turkey？

2024-01-13 竞赛及其他题库

Native American showed the pilgrims how to cultivate corn which helped them survive the bitter winter in the New WorlD.

2024-01-13 竞赛及其他题库

Which of the following food is made with mostly dried fruit and breadcrumbs？

2024-01-13 竞赛及其他题库

Today， a dragon boat usually has 22 paddlers， a drummer in the front and a steerer at the rear.

2024-01-13 竞赛及其他题库

The word mooncake first appeared in the Southern Song Dynasty， even though， at that time， the moon cakes were not rounD.

2024-01-13 竞赛及其他题库

Daffodils， emerging from the earth in the spring， also symbolize new life and the resurrection of Christ.

2024-01-13 竞赛及其他题库

A peninsula is a piece of land that extends into a body of water and is surrounded on（）sides by water.

2024-01-13 竞赛及其他题库

The national flower of Mexico is（）.

2024-01-13 竞赛及其他题库