... 医药箱 healer’s kit; medicine cabinet 炸药箱explosive box; powder box 不可救药 too seriously ill to be cured with medicine; be beyond [past] cure; be incorrigible; be past praying for; beyond help [remedy]; cease hoping for one's recovery; hopeless; incurable; irretrievable; too far gone 这种病已是不可救药了。 it was a case far beyond cure ...
NO gas , wapor or dust that may severely affect the insulation of contact box, no explosive or corrosive substance.
无严重影响触头盒绝缘的气体、蒸汽、灰尘及其它爆炸性和腐蚀介质的场所。
3
Heating cable cross: must be used in explosive situations linear supporting proof junction box, the general situation can also be used splice or welding.