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锥形牙轮 | |
oil | conical cutters |
钻头 | |
gen. | drill |
bridg.constr. | borer |
hydroel.st. | aiguille; drill bit; bore bit |
met. | drilling bit; straight bit |
| |||
conical cutters | |||
taper cutter; taper mill |
锥形牙轮 : 4 phrases in 2 subjects |
Oil / petroleum | 3 |
Technology | 1 |