Having optimized preheat temperatures, solder pot temperatures, and flux volume, the conveyor speed may have to be reduced to accommodate the solder wetting when using lead-free solder.
对预热温度、焊料槽温度和焊剂体积进行优化后，还可将传送带速度降低，以适应使用无铅焊料时的熔湿速度。
Characteristics of supersonic combustion by injecting supercritical kerosene fuel into a Mach 2.5 crossflow at various preheat temperatures and pressures were investigated experimentally.
针对各种温度、压力下，马赫数2．5流场中超临界煤油的超声速燃烧性能进行了实验研究。
The formulations change required are new activator systems, which can sustain higher preheat and soldering temperatures.
对配方所必须作出的变动即是添加能够承受较高的预热和焊接温度的新活化剂配系。
应用推荐