Rowland

       
  • ring [物]罗兰环(用磁性材料制成, 用以研究材料的性能)

Rowland的用法和样例:

例句

  1. Rowland hill, a schoolmaster in England, is the first to put forward a proposal to use stamp to cover postage.
    罗兰·希尔,英国的一位小学校长,第一个提出用邮票来支付邮费。
  2. It was very sad; Rowland, after a year's separation, decided to return to her husband, but he refused to have her back.
    真是遗憾; 罗兰离开丈夫一年以后决定回到丈夫的身边,而她丈夫却拒绝了。
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