When the follower is on the base circle of the cam， the pump plunger is at the （） of its stroke.
举一反三
- The plunger in the fuel injector pump， usually operated by a （）， is driven up and down when working.
- When the cam is rotated or turned, the follower would be moved either right or left, or .
- There are two kinds of stroke, and they are ischemic stroke and hemorrhagic stroke.
- The third stroke is the power stroke．
- The first stroke is the intake stroke．