管心距 meaning in English

tube pitch

Fixed head heat exchangers with type 25 tubes and square 32 tube pitch ; number and pattern of tubes
端头固定的内管直径25三角形管心距32的管式热交换
Tubular heat exchangers ; tube pitches , diameter of bores in tube sheets , baffles and support plates
管式热交换器.管心距管薄板的钻孔直径.挡板和支承
Fixed head heat exchangers with type 20 tubes and triangular 25 tube pitch ; number and pattern of tubes
端头固定的内管直径20三角形管心距25的管式热交换
Fixed head tubular heat exchangers with type 25 tubes and triangular 32 tube pitch ; number and pattern of tubes
端头固定的内管直径25三角形管心距32的管式热交换