在整体实验中，用不锈钢双极电极引导胃电，用橡皮囊换能器法记录胃的运动；
The electrical activity was leaded by bipolar electrode in vivo, and by suction electrode in vitro.
实际上，这种橡皮囊压力机是1983年制造的，已是二手设备，技术并不先进。
In fact, the hydraulic stretch press was also second-hand equipment made in 1983, and the technology used is not advanced.
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