To free individual elements, call the free routine from the pool interface.
要释放各个元素，可以调用pool接口中的free例程。
Training the elements of free landing with the help of a special carriage.
训练用一种特殊运输工具来实现自由着陆
In fresh water lake, trace elements belonging to hard acid exist mainly as free ion.
在淡水湖泊中，属于硬酸的元素主要以游离离子存在。
Second, the elements studying of the style of free format design.
对自由版式设计风格构成要素的研究。
These elements are shielded that they are free from the influence of magnetic field.
这些元件已加屏蔽，因此不受磁场影响。
These elements are shielded that they are free from the influence of magnetic field.
这些元件已加屏蔽，因此不受磁场影响。
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