The principle of its construction is simple.
它的构造原理是很简单的。
The full set of device construction is simple, easy operation, all mechanical equipment are automated control.
全套装置施工简单、操作容易，所有机械设备均为自动化控制。
This design is selected based on its stress calculations as well as its aesthetic appeal. It is practical, the construction is simple, and it's easy to use.
选择这一设计方案的原因是它的应力等计算结果和外观符合要求，可以用于实际工作，工艺简单，方便使用。
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