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方法一: 1.取一段与天平刻度尺等长或稍长的玻璃管(或试管)。装上红墨水的酒精溶液或其它有色溶液,内留一气泡(稍大),封好头端制成为水准器。 2.用S形细铁丝把水准器挂在天平刻度尺下(应不妨碍游码移动左右移动水准器,使天平指针指向刻度盘中间,并调整S形铁丝下端弯钩,使气泡位于刻度尺中下方(或左下方),卡死细铁丝两头弯钩,固定好水准器。 3.在天平左托盘上放一个250毫升烧杯,称量至天平指针指向刻度盘中间。 实验时,将二氧化碳倾入烧杯,天平左盘增
Method one: 1. Take a glass tube (or test tube) equal to or longer than the balance scale. Put a red ink in alcohol solution or other colored solution, leaving a bubble (larger), seal the head and make a leveler. 2. Use S-shaped thin wire to hang the leveling device under the balance scale (should not interfere with the movement of the code to move the leveler left and right, so that the scale pointer points to the middle of the dial, and adjust the lower end of the S-shaped wire hook, so that the air bubble is located on the scale In the lower middle (or lower left), the two hooks of the thin wire are clamped and the level is fixed.. 3. Place a 250-ml beaker on the scale’s left tray and weigh it until the scale pointer points to the middle of the scale. Into the beaker, the balance of the left disk increase