Self - balance recorders and indicators for use in industerial - process measurement and control systems 工業(yè)過程測量和控制系統(tǒng)用自動平衡式記錄儀和指示儀
Specifications of self - balance recorders and indicators with electric contacts for industrial - process measurement and control systems 工業(yè)過程測量和控制用帶電接點(diǎn)控制裝置的自動平衡式記錄儀和指示儀技術(shù)條件