light plastic spar 发光塑料标柱
light spar
光石
以上为机器翻译结果，长、整句建议使用 人工翻译 。
A light SPAR that crosses a fore-and-aft sail diagonally.
对角地穿过纵向船帆的轻质圆材。
youdao
A light SPAR that crosses a fore - and-aft sail diagonally.
Iceland SPAR is a form of calcite that splits light into two beams.
冰洲石是方解石的一种存在形式，它可以把光线分成两束。
Iceland spar is a form of calcite that splits light into two beams.
ECONOMIST: How Norsemen found their way round in cloudy weather
It has now been shown that it is of Iceland spar - a form of calcite known for its property of diffracting light into two separate rays.
BBC: 'Viking sunstone' found in shipwreck
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