обслуживать

• Two of these shovels are used in the shaft, one delegated to each shift.

• The chip wringer can service a number of machine tools.

• One operator attends several presses.

• Such systems should be able to cater for (or to) thousands of channels.

• The oscillator covers the range 1 kc/s--10 Mc/s.

• The operator can handle up to six machines.

• A 30-ton derrick serves No. 2 hatch.

• The meter can be serviced without shutting down the pipeline.

• The laboratory will service the pigment department.

• The accumulators take care of several presses.

• The second operator is tending the open dies — applying lubricant where necessary, for example.