Despite its smooth external appearance, at the micro level, it has a coarse texture thanks to thousands of tiny teeth-like scales called dermal denticles.
鲨鱼的皮肤还有别的独到之处，虽然从外面看上去十分光滑但是在显微镜下有着粗糙的纹路鲨鱼皮肤表面布满了成千上万微小的齿状麟片。
Dermal denticle
原声例句
TED-Ed（视频版）
英语百科
Fish scale
（重定向自Dermal denticle）
The skin of most fishes are covered with scales. Scales vary enormously in size, shape, structure, and extent, ranging from strong and rigid armour plates in fishes such as shrimpfishes and boxfishes, to microscopic or absent in fishes such as eels and anglerfishes. The morphology of a scale can be used to identify the species of fish it came from.
- straight shank的意思
- straight shank arbour的意思
- straight shank bit的意思
- straight shank burring reamer的意思
- straight shank carbide drill的意思
- straight shank drill的意思
- straight shank drill holder的意思
- straight shank end mill的意思
- straight shank end mill with carbide tip的意思
- straight shank end slotting cutter的意思
- straight shank gear nut type drill chuck的意思
- straight shank hand reamer的意思
- straight shank keyway milling cutter的意思
- straight shank keyway mills的意思
- straight shank machine reamer的意思
- straight shank milling cutter的意思
- straight shank punch的意思
- straight shank reamer的意思
- straight shank rivet的意思
- straight shank short fluted twist drill的意思
- straight shank socket wrench的意思
- straight shank solid carbide endmill的意思
- straight shank tager tap的意思
- straight shank tap的意思
- straight shank taper tap的意思