Whereas the cometary samples are relatively easy to extract from the collector plates, that is not the case for the interstellar dust samples.
与从收集盘相对容易的提取出彗星样品不同，星际尘埃要困难得多。
Description: Collector Jack Chen of Washington collects passenger, motorcycle, and special graphic plates, as well as plates of 1976.
陈光正制作，蒐集美国的汽车及摩托车车牌，并提供图片、介绍及相关连结。
Description: Collector Jack Chen of Washington collects passenger, motorcycle, and special graphic plates, as well as plates of 1976.
陈光正制作，蒐集美国的汽车及摩托车车牌，并提供图片、介绍及相关连结。
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