以下为句子列表：
英文: On the basis of analysis of design Criterion of shaft washer and housing washer of tandem composite type cylindrical roller thrust bearing, we present a mathematic model for optimal design in accordance with line contact requirement for cylindrical roller
中文: 摘要在分析串联组合型推力圆柱滚子轴承轴圈和座圈设计准则的基础上，按滚子与滚道线接触要求建立其最优化设计数学模型，采用机械优化设计中的约束随机方向搜索法计算轴圈和座圈的厚度、厚度变化角。
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英文: A PRELIMINARY STUDY ON SITE TYPE CLASSIFICATION FOR THE LAND FIT FOR GROWING SHELLAC TREES IN CANGYUAN COUNTY
中文: 沧源县宜胶地立地类型划分初探
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英文: The most common (9 %,8 of 7 species) site type of oviposition is free moving water,including both lentic water (mode ) and lotic water (mode ),which have been considered to be the primitive modes of reproduction in anurans.
中文: 研究结果如下: 7 种四川无尾类可以划分为类共种繁殖模式。 水内产卵是比较原始的一类繁殖模式,又分种:静水产卵(模式)和流水产卵(模式),8种(9 %)是在水内产卵;
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