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我们采用直流四引线法，对两个单晶样品Ｌａ３Ｃｏ（１）和（２）的电阻率的温度变化进行了测定．结果表明，超导转移温度、电阻率的值、各向异性以及饱和现象等都有很好的再现性．
We measured the temperature dependence of the resistivity of La3Co (1) and (2) in two single crystal samples by the direct current four-lead method. The results show that the superconducting transition temperature, the resistivity value, anisotropy and saturation phenomena have good reproducibility.