1) concentric groove
同心纹
2) the crackle of the concentric circle
同心圆纹
3) Concentric banded stripe
同心环形纹
4) homocentric ring disc
同心环波纹碟片
1.
Nano-sized calcium carbonate with the diameter between 20 to 30nm was prepared using the rotating packed bed with homocentric ring discs as the filing,and the factors which influence the production of the nano-sized calcium carbonate were investigated.
利用同心环波纹碟片式超重力旋转床制备粒径范围在20~30 nm的纳米碳酸钙样品,并对影响其生成的因素进行了研究。
5) corrugated concentric conductor
皱纹同心导体
6) concentric ring wave form disk plate
同心环波纹碟片填料
补充资料：同心圆
1.同一平面上同一圆心而半径不同的圆。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条