金刚砂的英文：
corundum
electrolon
emery
- emery bag
(磨针用的)金刚砂袋 - The emery is a hard metallic substance.
金刚砂是非常坚硬的金属物质。
n. 刚玉,金刚砂
- It is closely related to the corundum structure except that the cations are of two different types
除了阳离子是两种不同种类以外，它和刚玉构型非常接近。 - The utility model relates to a corundum sieve tube used in the field of oil field and oil well production.
本实用新型涉及油田油井开采领域中用到的一种刚玉筛管。
金刚砂
n. 金刚砂
- They infiltrated behind the lines so as to annoy the emery replacements.
他们渗透敌后以便骚扰敌军的调度。 - Remove the scratches on the hook point using a fine emery paper.
请用细砂纸或锉刀研磨旋梭尖的伤痕。