A non-local two-gluon vacuum expectation value is expanded as a power series of space-time interval x-y and possesses the translational invariance in Lorentz gauge.The coefficients of the first two terms in the power series are related toin Lorentz gauge.The value-(127MeV)^(2) ofis estimated with the phenomenological values for the vacuum condensateandthrough the quantum chromodynamics equation of motion.
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