grooved joint meaning in English

凹缝
槽舌接缝
榫槽连接

Tongue groove joint
槽沟平接榫
4 double - welded groove joints shall have their root passes back gouged to sound metal on the reverse side before proceeding with welding on that side
双面焊接的坡口焊道，应在焊接前将该面底部焊道逆向刨削，直到其对面露出完好的金属。
5 all single - sided groove joints in nickel alloys , stainless steel and ferritic alloys containing more than two ( 2 ) percent chromium shall be welded using a gas tungsten - arc root pass with an inert gas back purge
铬含量超过2 %的镍合金、不锈钢和铁素体合金的单面坡口焊道用钨极气体保护焊，其根部焊道用惰性气体反吹。
The company possesses the advanced floor production assembly line equipment , the imported tools an special grooved and tongued equipment with floor having the high precision size and better tongued - and - grooved joint
公司拥有先进的地板生产流水线设备，使用全进口加工刀具，加工后的地板精度可达百分之一毫米，全面的大卡扣加工设备，使加工后的地板更是丝丝入扣，不留一点缝隙。