This is the 7495th most frequent Chinese word.
計開
"計開" is not a common Chinese word or phrase. It may be a misspelling or uncommon usage.
In this sentence, '計開' is used as a noun referring to a tool or method for planning and opening things.
我看到他手中的計開。
I saw the planning and opening tool in his hand.
Here, '計開' is functioning as a compound verb, emphasizing steps such as planning (計) and opening or starting (開).
我們需要仔細地計開這項任務。
We need to carefully plan and open this task.
In this context, '計開' is described as a process or concept involved in systematic planning and initiation.