变工况英语怎么说

变工况是指随着环境、负载、设备状态等因素的变化，工作条件也随之发生变化的现象。这个词来源于工程学领域，在英文中可以翻译为 "variable operating conditions"。下面是一些例句：
The engine has been designed to operate under variable operating conditions.
Our testing procedures take into account variable operating conditions.
The device must be able to withstand variable operating conditions.
翻译：
该发动机已被设计为在变工况下运行。
我们的测试程序考虑了变工况。
该设备必须能够承受变工况。