blast joint hole地层: stratum; layer; serati; geos ...砂: sand; grit冲蚀: washout; ablation; scouring在: exist; be living耐: be able to bear or endure下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:地层砂冲蚀在耐冲蚀管上形成的孔，即可在微信中查询翻译
