Results showed that the hard seed rate of A. cicer was high because of impermeability.

结果表明：该草种子硬实率高，造成硬实的主要原因是种皮的障碍作用。

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At natural condition rate of stigma exsertion has the positive proportion with seed rate.

在自然条件下，柱头外露率与异交结实率成正相关。

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The paper introduced the structure, basic principles and control patten of seed rate of the double hole.

介绍了复式型孔的结构、基本原理和控制排种量的方式。

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An electrical field removes any ions present, so the rate of seed growth should be equivalent to that in nature with no cosmic rays around.

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