Aerobic respiration, a process that uses oxygen, and anaerobic respiration, a process that doesn't use oxygen, are two forms of cellular respiration.Although some cells may engage in just one type of respiration, most cells use both types, depending on an organism's needs.erobic respiration, a process that uses oxygen, and anaerobic respiration, a process that doesn't use oxygen, are two forms of cellular respiration.
exists and is an alternate of . conventional machining is that in which the control of removal of material is either by automatic machines or by man handled.while cnc machinig is that in which control of machining process is done by computes or through programming.
In a CNC machine, axis means the number of motors that can be individually driven for positional control of the tool. A simple CNC lathe has only two axes for positional control of the tool, the X and the Z axes. So it is a two axes machine. A simple VMC ( vertical milling centre) is a 3 axes milling machine.