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Terms for subject Explosives and Explosive Ordnance Disposal containing 三角 形连接 | all forms
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连接三角形法以连接点和井筒两锤线构成三角形，进行一井定向的连接测量方法connection triangle method
连接三角形法以连接点和井筒两锤线构成三角形，进行一井定向的连接测量方法transfer triangle method

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