Hence, multi-layer polymer injection allocator with single-tubing and sliding sleeveswitch is developed, and development, lab experiment and pilot test of this polymer alloca...
为此研制了聚合物单管多层滑套开关式配注器，介绍了滑套开关式配注器研制、室内实验和矿场应用情况。
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The utility model is composed of a common cooker body, a sleeve pipe, a heating wire, a temperature-controlling switch, a tap, a porcelain plate, etc.