订于用英文怎么说

订于的英文：
be scheduled for

The Peace of Ryswick was signed in September 1697.
《里斯维克和约》签订于1697年9月。

Now then an agreement entered into this sixteenth day of October, write that first
现在你先写上:“本合同订于十月十六日。”

not scheduled or not on a regular schedule.
不预定的或不按规定时间表。

scheduled airline
定期航线

I'll schedule the expenditure.
我会做出支出的明细清单。

system scheduler queue
系统调度程序队列

The convention is scheduled for the fall.
大会定在秋季召开。