electric welder短语⁹⁶⁶⁷⁷⁺⁶ 基本例句 电焊机 Good resistance to impact and fire retardant performance, equipped with electric welder is perfect protection for head and protects upper chest and throat against sparks and spatter; 良好的抗冲击、阻燃性能，配置电焊面罩有效保护头部的同时有效防护咽喉和上胸遭受火花和飞溅物的伤害； biz72