基于传感技术的中学理科实验系统由数据采集器、传感器等计算机硬件设施及配套数据组成,因为该技术可以实现掌上操作,又称手持技术。手持技术的成功在于其体现了科学研究中的“转换思想”——转定性为定量,化抽象为具体。本实验利用手持技术比较中和反应过程中溶液pH的变化,感受滴定过程中突跃的存在。 Based on the sensing technology of high school science experiment system consists of data acquisition devices, sensors and other computer hardware facilities and supporting data, because the technology can achieve handheld operation, also known as handheld technology. The success of hand-held technology lies in that it embodies the “transformational thinking” in scientific research - transitivity is quantitative and abstract as concrete. In this experiment, we used hand-held technique to compare the changes of solution pH during neutralization reaction and felt the sudden jump during titration.