茯苓学名为Wolfiporia extensa (Peck) Ginns，其中括号的含义是：

中国大学MOOC: 钻孔加工中啄钻 (PECK_DRILLING)生成的G指令（FANUC系统）是

中国大学MOOC:"钻孔加工中啄钻 (PECK_DRILLING)生成的G指令（FANUC系统）是";

选出划线部分读音不同的单词。 A: ette B: peck C: cheek D: f ell

when drilling, the drill rotates and moves axially. Thus, The main motion is the motion of the drill.

车削的英文单词是（） A: Drilling B: Turning C: Milling D: Machine

铣削的英文单词是（）。 A: drilling B: turning C: milling D: machine

Haphaestus， god of fire, fasten Prometheus to a steep cliff by a never-failing chain, and sent a bloodthirsty eagle to peck at his liver everyday.

petroleum mud logging technology is characterized by multi-parameters, large amount of information, fast and real-time on site, and its main functions are ( ). A: discover oil and gas reservoirs in time B: evaluate oil and gas reservoirs while drilling C: provide resource evaluation parameters D: ensure safe drilling

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.