fragile material造句

Do not stand a ladder on loose material or lean it against fragile material
不要将梯子安放在松软或靠在易塌的物件上。
This bit is used for drilling hard and fragile materials , such as decorative granite , marble , ceramic tile and glass , etc
它用于花岗石、大理石、瓷砖、玻璃等硬脆材料的钻孔加工。
Metal substrate includes solid lubricant or must contain the fragile material grinding ex . chip of low grinding downforce
用途可同时加工表面软硬不同材质如金属基材中含固态润滑剂，或者须有低研磨下压力之易脆材质研磨如晶片。
It's difficult to find fragile material in a sentence. 用fragile material造句挺难的