adjust by hand的用法和样例：
- Ordinary electrical cabinet, all current control valves adjusted by hand except back valve and steam regulating valve.
- The lamb had to be brought up by hand.
- A potter is making pottery by hand.
- Farmers used to thrash their wheat by hand.
- The cost of making them by hand is prohibitive.
adjust by hand的相关资料：
adjust nut adjust adjustable-blade propeller pump adjustable compensating condenser adjustable-speed V-belt drive adjustable tubular hack saw frame adjustable constant-speed motor adjustable impedance type ballast adjustable synchronous respirator adjustable multiple spindle drill adjusting frame of corn harvester