如：=1 代表異或 >=1 代表或運算
轉自谷歌圖書
https://books.google.co.kr/books?id=85FXxDMOd0kC&pg=PA227&lpg=PA227&dq=%E6%95%B0%E5%AD%97%E7%94%B5%E8%B7%AF+%E6%96%B9%E6%A1%86%E5%86%85+%3D1+%E4%BB%A3%E8%A1%A8%E4%BB%80%E4%B9%88&source=bl&ots=D7gIMl_SYA&sig=j_U1vT294ts5448KzEXG4N_FdqM&hl=zh-CN&sa=X&ved=0ahUKEwjdzaHg5r3QAhVIS7wKHej2AckQ6AEIGzAA#v=onepage&q=%E6%95%B0%E5%AD%97%E7%94%B5%E8%B7%AF%20%E6%96%B9%E6%A1%86%E5%86%85%20%3D1%20%E4%BB%A3%E8%A1%A8%E4%BB%80%E4%B9%88&f=false
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