BALL TYPE CONSTANT VELOCITY UNIVERSAL JOINT AND ITS MANUFACTURING METHOD ボール形等速ジョイントおよびその製造方法 - 特許庁
METHOD OF ESTIMATING ANGLE DEVIATION OF PLANE OF POLARIZATION OF CONSTANT-POLARIZATION OPTICAL FIBER AND METHOD OF CONNECTING CONSTANT-POLARIZATION OPTICAL FIBER 定偏波光ファイバの偏波面の角度ずれ推定方法及び定偏波光ファイバの接続方法 - 特許庁
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