solder fusing造句

• The solder is heated to its melting point in a reducing atmosphere , so that the joining takes place without flux as the solder fuses and then infiltrates the gaps between the two pieces to be joined by means of capillary action , creating a highly airtight seal
  在高精度狭窄的空隙中也能通过毛细管现象进行浸透并和母材焊接，因此可实现高气密性，获得比母材更高的强度。