This kind of structural unit is called the chain link.
这种结构单元被称为链节。
(physics and chemistry) the simplest structural unit of an element or compound.
(物理和化学)元素或化合物最简单的结构单位。
the fundamental structural and functional unit of the nervous system is the neuron;
神经元是神经系统基本的结构单位和功能单位；
Class diagrams deliver the structural information unit testers need.
类图交付单元测试所需的构架信息。
The dog driver is a unit that limitates the moving range of the structural member.
止动器是限制构件运动范围的一种装置。
The dog driver is a unit that limitates the moving range of the structural member.
止动器是限制构件运动范围的一种装置。
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