GB/T 33552-2017小型汽油机直联高速离心泵性能评价规范国家标准
英文:Small-size gasoline engine direct-link high speed centrifugal pumps—Specification for performance evaluation GB/T 335...
英文:Small-size gasoline engine direct-link high speed centrifugal pumps—Specification for performance evaluation GB/T 335...