本文以大蒜根尖为材料，在传统制片法的基础上加以改进，获得了大量植物细胞有丝分裂的清晰图象。

This paper is about the root ends of garlic. On the basis of improving the traditional ways of making slices, we have got a large number of clear pictures about the mitosis of plant cells.

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本文在现有的尖劈衍射解的基础上给出尖劈边缘附近声场的清晰图象，并深入地讨论它们的物理意义。

Patterns of the diffracted field around a wedge are given and their physical meanings are discussed in depth, based upon some existing solutions to edge-diffraction problems.

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它们中的一部分在某些领域，完全可以匹敌液晶技术，包括更清晰的图象，更明亮的色彩，更薄的屏幕以及更低的能耗。

Some of them could give the LCD a run for its money, at least in some areas, by offering crisper images, brighter colours, thinner screens and lower power consumption.

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