“spool piece”可以造什么句,spool piece造句
来源:语文精选馆 2.11W
articulated spool piece
dog-leg spool piece
Check valve and butterfly valve combinations are very popular; normally a short spool piece is required between the valves.
articulated spool piece
dog-leg spool piece
Check valve and butterfly valve combinations are very popular; normally a short spool piece is required between the valves.