常見例句雙語例句The author introduces the process of using NE555circuit and a few fittings to make a tutamen of automatic refrigerator with functions of over-pressure, deficient pressure, and delay.本文介紹了一種衹用一塊NE555時基電路和少量分立元件，就能制作一個具有過壓、欠壓和斷電延遲三種保護功能的全自動電冰箱保護器。 返回 tutamen