砂铁 meaning in Chinese

placer iron

The area is blessed with high - quality fine - grained ferruginous sand , charcoal and water from rivers , which are essential for sword making
它的知名完全得益于原料上乘的砂铁和燃料(炭)及便利的河川水运。
The sand faced - iron mould casting process is a special iron castings production process , according which castings are to he cast in the iron moulds having a thin layer of the resin sand facing in their inner surfaces
摘要铁型覆砂铸造是指在金属型（铁型）内腔覆上一薄层树脂砂，然后采用这种覆砂铁型浇注铸件。
Since the sand faced - iron mould has high rigidity , it is possible , when used for crankshafts production , to adopt feeder - less foundry method and increase the process yield , as well as increase dimension accuracy of castings and improve surface quality of castings
由于覆砂铁型刚度较高，用于球铁件能实现无冒口铸造，提高工艺出品率，并能提高铸件尺寸精度，改善表面质量。