differential head meter的用法和样例：
- Head Meter Design for Test-bed of Heavy Hydraulic Cycle Compressor
- She nestled her head on his shoulder.
- A member of the subphylum Vertebrata, a primary division of the phylum Chordata that includes the fishes, amphibians, reptiles, birds, and mammals, all of which are characterized by a segmented spinal column and a distinct, well - differentiated head.
- The deer lowered its head to drink from the pond.
- He gave the little boy a clout on the head.