软质材料 meaning in Chinese

soft abrasives

Graphite is a kind of soft material
石墨是一种软质材料。
Combined flexible materials consisting of polyester films and insulating papers for electrical purposes
电气用聚酯薄膜和绝缘纸复合软质材料
The machine is restricted to sharpen cutting - tools , no other bulky objects , iron sheets , soft materials ( such as aluminum , copper and so on ) and wooden articles be allowed to be machined on
砂轮只限于磨刀具、不得磨笨重的物料或薄铁板以及软质材料(铝、铜等)和木质品。