powder pattern

• 粉末图样,粉末干涉象

powder pattern的用法和样例：

例句

1. Such observation could not wash out the interference pattern.
   这样的观察当然不可能消除掉干涉图样。
2. The cleaned slide is dipped in deionized water and the drying pattern is observed.
   把已洗干净的载片侵入去离子水中然后观察其干燥的图样。