This factory produces machine tools.Machine tools ＿＿＿ ＿＿＿in this factory.

There are five basic types of machine tools such as lathe or turning machine, drilling or boring machine, milling machine, shaper or planer, and grinder.

Several machine tools are directly controlled by a central computer, this is the _________.

_____are generally considered to be the oldest machine tools and were developed in the 1750s.

The origin of the coordinate system inherent to CNC machine tools is ( ). A: Machine origin B: Machine reference point C: Workpiece origin D: Fixture origin

One of our customers requests us to obtain your best offer for machine tools to the following s______(规格）

An important advance in the philosophy of NC of machine tools was the shift toward the use of controller units instead of computers in NC systems.

Rolls-Royce is world famous for（） A: machine tools B: household appliances C: luxury automobiles D: high-quality knives and hand tool

According to the characteristics of the control system, CNC machine tools can be divided into ( ),( ) and contour control machine tools. A: Point to Point Control B: open-loop control C: line motion control D: closed-loop control

In order to reduce the number of the cutting tools and measuring tools which are used to manufacture and measure machine parts, two fit systems are applied, hole-basis system and shaft-basis system, in which the shaft-basis system is the most commonly used one.