覆钢板的 meaning in Chinese

steel plate gate

Standard specification for straight - beam ultrasonic examination of plain and clad steel plates for special applications
特殊设备用的普通钢板和包覆钢板的直波束超声探伤检验的标准规范
Standard specification for steel sheet , zinc and aramid fiber composite coated for corrugated steel sewer , culvert , and underdrain pipe
波纹钢制下水沟暗渠和雨水管用锌和芳族聚酰胺纤维复合涂覆钢板的标准规范