My Job

I am a technician in a factory ,
what i usually do in the factory can be roughly divided to three parts:
1,dealing with the faults and stop down of the production machine and fix them,bring them back to run.
2,perform the annual/quarterly/monthly/weekly/daily inspection and maintenance of the machine and do some
adjust/changing work if needed.
3,carrying some projects about improving the productivity of the machine,lowing down the downtime,and reduce the spare parts consuming an so on.

'divided to three parts' :  divided in to three parts

'stop down of the production machine and fix them,bring them back to run.' :

close down of the production machine and its repair, bringing it back in to operation

'adjust/changing work' :  adjustment /modification

'carrying some projects about improving . . ' :  carrying out some projects improving/to improve . .

'lowing down' :  reducing/decreasing

'reduce the spare parts consuming an so on' :  reducing the spare parts consumed, etc./and so on

OR  reducing the consumption of spare parts, etc.

My Job

I am a technician in a factory and 
what I usually do in the factory (this can be eliminated as it is already implied) can be roughly divided into three parts:
1,dealing with equipment malfunctions faults with the resulting shut stop down of the production, machine and fix them, doing all the necessary repairs to  bring the equipment them back to full production.  run.
2,perform the annual/quarterly/monthly/weekly/daily inspection and maintenance of the machines and also do some
adjust/change the work if needed.
3,carrying some undertake projects to about improve the productivity of the machines, lowing down decrease the downtime and reduce the consumption of spare parts consuming and so on.

Well done Xuhuayu!  It sounds like you have a very busy job.  Keep up your good work!