适量的表面活性剂的加入，有助于增强无铅焊膏用松香型助焊剂的助焊性能；

The result is that the rosin kind has no effect on soldering ability of rosin-based flux.

youdao

适量的表面活性剂的加入，有助于增强无铅焊膏用松香型助焊剂的助焊性能；

The result is that the rosin kind has no effect on soldering ability of rosin-based flux.

youdao