B生物医药大词典by MedSci
例句 /

The fixed anvil of the tube micrometers has spherical surface. They are suitable for measuring the thickness of tubes.

The fixed anvil of the tube micrometers has spherical surface. They are suitable for measuring the thickness of tubes.

壁厚千分尺固定测砧为球面，适用于测量管壁厚度。