The effect of the surface of micro-defects of tin plate steel (TFS) used for food packaging to the quality of food was studied.

研究镀铬钢板表面微观缺陷对其所包装食品的影响。

youdao

Pipe lodgepole-steel tunnel support technique is a strong composite support system consisting of advance pipe lodgepole, support stell vault, tin plate packer and working surface plug-back.

管棚复合钢支撑技术，是一个通过超前管棚、支撑钢拱、白铁皮隔离、工作面封堵的相互配合和共同作用，形成了具有强大支护抗力的复合支护体系。

youdao

Main materials: copper, aluminum, iron, stainless steel, tin plate, zinc alloy, tin lead alloy etc.

主要材料有铜、铝、铁、不锈钢、马口铁、锌合金、铅锡合金等。

youdao