that是什么从句，order

是宾语从句，例如：

1、We only married in order that the child should be legitimate.我们结婚纯粹是为了给孩子一个合法身份。

2、In order that the value of load vector can forecast the load of the next time for tasks assignment， this system utilizes the disposed load information to construct load vector.为了使负载向量值尽可能的预测下一分配时刻的负载，本系统采用平滑后的负载信息构建负载向量。

3、I learn science in order that I may work better for our country.我学科学是为了能更好地为祖国工作。

order是及物动词，所以从句是宾语从句，但常使用虚拟语气。The teacher ordered that we should finish our homework on time.