长寿命α放射性气溶胶浓度
Long-lived α Radioactive Aerosal
Concentration of long-lived α-radioactive aerosols
延长寿命
prolong life
Extend the Life
lenthenging liftime
prolong the operation cycle
lengthen life span
increasing of life time
tubes
prolong lifespan
increasing belt service life
延长的电缆寿命
extended wire rope cable life
延长灯泡寿命
to prolong the life of lamps
半惰性长寿命阳极
semi-inert long life anode
安全寿命
life assessment
Safe life
the safe operational life
Safety life