词汇	structural drilling
释义	structural drilling 结构钻探
随便看	secondary substation secondary substrate secondary succession secondary succession of old-fields Secondary succession stage secondary sulfide secondary sulfide zone secondary sulphide enrichment secondary sulphide ore secondary sulphides secondary sulphide zone secondary sun gear secondary sun wheel secondary superheater secondary super-heater secondary superiority Secondary supersession thing secondary supply secondary supply water secondary surveillance radar ssr secondary suspended channel secondary suspended solid secondary suspension secondary suspension gear secondary suspensor