Lead alloys as solder for transducers used in high - powered ( designated to operate for several hours at acoustic power levels of 125 db spl and above ) loudspeakers 用作大功率扬声器(用在长时间操作125分贝以上的音响系统)的传感器焊料中的铅合金。
2.
Lead alloys as solder for transducers used in high - powered ( designated to operate for several hours at acoustic power levels of 125 db spl and above ) loudspeakers 用于高功率(指定的长时间运行的125分贝及以上声压级)扬声器用传感器焊料中的铅合金。