opening bottom meaning in English

开沟犁体

Specification for open bottomed taper plug valves for 1st , 2nd and 3rd family gases up to 200 mbar
压力可达200毫巴家庭用一类二类和三类燃气敞口底部锥形旋塞阀规范
1 . 6mm wide , 12mm long made fom nickel silver case with open bottom for solding mechanism easy to assemble tasted with 30 , 000 movements
散装弹弓推板系列,宽度1 . 6mm ,高镍白铜材料。
1 . 8mm wide , 11mm long made fom nickel silver case with open bottom for solding mechanism easy to assemble tasted with 30 , 000 movements
散装弹弓推板系列，宽度1 . 8mm ,高镍白铜材料。
1 . 8mm wide , 12mm long made fom nickel silver case with open bottom for solding mechanism easy to assemble tasted with 30 , 000 movements
散装弹弓推板系列,宽度1 . 8mm ,高镍白铜材料图解说明
2 . 0mm wide , 12mm long made fom nickel silver case with open bottom for solding mechanism easy to assemble tasted with 30 , 000 movements
散装弹弓推板系列,宽度2 . 0mm ,高镍白铜材料图解说明

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