A . Te=(T1/2+TB.÷(T1/2·TB.B . Te=(T1/2·TB.÷(T1/2+TB.C . Tb=(T1/2+TE.÷(T1/2-TE.D . Tb=(T1/2·TE.÷(T1/2+TE.E . Te=(T1/2-TB.÷(T1/2·TB.
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