共轭椭圆规是根据主径圆的性质设计的。
The conjugate ellipsograph is designed according to the characteristics of the main—diametral circle.
主镜的直径为80厘米，这一口径即使在地面天文台也是很可观的。
The primary mirror is 80 cm in diameter, a respectable size even for an observatory on the ground.
分析表明：通径分析与主成份分析相结合的方法是进行光合速率综合的间接选择的有效方法。
Analysis indicated that it is an effective method to combine path-analysis with principal component analysis for integrated indirect selection of photosynthetic rate.
指出主胰管宽径有随年龄增长而增宽的趋势，并在男、女性别间有一定差异性。
The diameter of the main pancreatic duct is increased with the age. There is a significant difference.
当采用相关法估计时间延迟时，多径时延的分辨率受到相关函数主(？)宽度的限制。
Multipath time delay estimation is constrained by the width of the signal correlation function when using correlation method.
据了解，西堠门大桥的主桥是世界首座分体式钢箱梁悬索桥，主跨1650米，跨径世界第二、国内第一。
It 's known that, Xihoumen cross-sea bridge's main bridge is the first split type steel box girder suspension bridge in the world, and mainly spans 1650m.
结果：主胰管的管径变异比较大。
Results: Differences extist in the sizes of the pancreatic duct.
张力减径机的主传动系统是由集中差速传动系统和单独传动系统组成的混合传动系统。
The main drive system of stretch reducer is made with differential and single driving system.
第二个主成分只有长短径比，两种主成分能解释肌纤维变异量的累积比率达到了89.70％。
The morphological qualitative parameters were the ratio of long diameter to short diameter. The two principal components contribute to 89.70% together.
第二个主成分只有长短径比，两种主成分能解释肌纤维变异量的累积比率达到了89.70％。
The morphological qualitative parameters were the ratio of long diameter to short diameter. The two principal components contribute to 89.70% together.
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