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生物制片用的切片机,一向都是依靠进口(解放后上海已能制造一部分),质量好一些的要数千元一台,差一些的也要一千元左右一台。价格很贵。因此,在中学工作的生物教师往往由于没有切片机,不能自己制作中学生物教学中需用的生物切片,只得向外地购买生物切片。切片机是一种非常细致的高级精密仪器,切片机上所用的切片刀也要求非常严格。我们被这种概念束缚住了,所以过去我们根本就不会去想,也(?)可能去想什么办法来解决中学自制生物切片的问
Biopsy microtome has always been to rely on imports (after the liberation of Shanghai has been able to create part), good quality to a few thousand dollars a Taiwan, some worse also a thousand yuan a. The price is expensive. As a result, biological teachers working in secondary schools often fail to produce their own biologic sections for secondary school biology because they do not have a microtome, and have to purchase biologic sections from outside. Slicer is a very detailed and sophisticated high-precision instruments, slicing machines used in the slicing knife is also very strict requirements. We are bound by this concept, so in the past we would not even think about it, and (?) May think of ways to solve the self-made middle school biopsy asked