Smathers J B, Holly F E
Int J Radiat Oncol Biol Phys. 1984 May;10(5):753-4. doi: 10.1016/0360-3016(84)90307-9.
To obtain verification of the proper time setting of the motorized run down timer for a AECL 780 Cobalt Unit, a digital timer is described, which can be added to the system for under $300.
为了验证AECL 780钴治疗机电动衰减定时器的正确时间设置，本文介绍了一种数字定时器，该定时器可以以低于300美元的成本添加到该系统中。
