The number of calibration curve: apparatus can store 9 calibration curve, 5 for one line, 4 for binomial parabola.
校正曲线数：仪器可存储9条标定曲线，5条为一元一次直线，4条为二项式抛物线。
Maybe just vacuum the bottom of the tank once a month with one of those siphon cleaner apparatus you can get at the pet store.
或者可以使用虹吸式换水法，一个月清理一次水箱底部，你可以在宠物商店买到虹吸换水的设备。
All vanadium REDOX flow battery (VRB) is a novel electrochemical apparatus which can transfer and store electricity effectively.
全钒液流电池是一种新型高效电能转化与储存装置。
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