A Norwegian biologist, F. O. Guldberg, decided that this problem of circular movement was worth investigating. He collected many true stories on the subject.
一位挪威生物学家古尔·伯格认为这种转圈运动的问题值得研究，他搜集了许多有关这个问题的真实故事。
CD (circular dichroism) spectroscopy was used to measure the circular dichroism of O-LLA segments in polymers.
以园二色谱(CD)测试了聚合物中聚乳酸链段的旋光性能。
The periphery of the plug body, which is far from the plug handle, is provided with a plurality of circular grooves, in which the O-shaped rubber seal ring is embedded.
本发明远离水塞提手的水塞体的外周面上设置若干圈环形凹槽，O形橡胶密封圈卡嵌在环形凹槽内。
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