单词:optical range
音标:[ˈɔptikəl reindʒ] ;
光视距; 视线距离; 直视距离
optical range的用法和样例:
例句
- With the range finder a bar with marking the several fixed distances must be affixed to the base of the tree.使用视距器时,必须在树基部附加一根指示几种固定距离棒。
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