什么是 lever-arm-balance？
The lever arm balance is useful for trial weighing and reading directly in gm. Double range, change from one range to another is accomplished by rotating a hinged arm
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去 X 发帖The lever arm balance is useful for trial weighing and reading directly in gm. Double range, change from one range to another is accomplished by rotating a hinged arm
还没有评论，来抢沙发吧！
X 上关于 lever-arm-balance 的真实讨论
去 X 发帖