Abstract: Another proving of three I algorithm in fuzzy logic system H_t based on H_t algebra is gotten.Moreover it is proved that three I algorithm is P-returning algorithm in fuzzy logic system H_t and the answer of FMT in fuzzy logic system H_t is obtained.The fuzzy logic system W is gotten if letting t=1 in fuzzy logic system H_t.So the results in fuzzy logic system H_t will be results in fuzzy logic system W.

摘要： 在讨论H_t代数的一些性质的基础上，得到系统H_t中的三I算法的另一种证明。指出多值逻辑系统H_t中的三I算法是P还原算法，并解决了H_t中的FMT问题。在多值逻辑系统H_t中，若令t=1，则得到多值逻辑系统W。所以多值逻辑系统H_t中的结论在t=1的情况下就是多值逻辑系统W中的结论。