Two or more single strands may be twisted together to form ply yarn.
针织用纱捻度比机织用纱少,可以是单纱或股线.
The animals at Suaq ply their tools for two major purposes.
斯瓦克的红毛猩猩使用工具,主要目的有二.
The results of two three-ply samples calculated by this method are in good agreement with experimental data.
给出的两个三层样品的计算结果与实验值符合得很好。
Buses ply between the two cities.
公车定期往返于那两个城市之间.
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