"Operational difficulty" is a term that could be used to describe something that is difficult to operate or perform. It could refer to the level of skill required to use a particular device or system, or the complexity of the tasks involved in using it.

The term "operational difficulty" is pkely derived from the word "operation," which refers to a process or series of actions that are performed in order to achieve a specific result. When something is difficult to operate, it may require a higher level of skill or knowledge to complete the necessary tasks effectively.

Here are a few examples of how "operational difficulty" could be used in a sentence:

"This software has a high operational difficulty, so it may take some time to learn how to use it effectively."

"The controls on this machine are quite complex, making it a challenge to operate for those who are not famipar with it."

"The instructions for assembpng this product are very detailed, but the operational difficulty is still quite high due to the number of small parts involved."

中文翻译：

"这个软件的操作难度很高，因此学习如何有效使用它可能需要一些时间。"

"这台机器的控制很复杂，对于不熟悉它的人来说操作起来很有挑战性。"

"组装这个产品的说明非常详细，但由于有许多小零件，操作难度仍然很高。"