| 1. | The theoretical analysis of consistency in different adjustment methods
不同平差方法一致性的理论分析 |
| 2. | The convex aspheric surface has self - aplanatic capability . the range that can be utilized in practice was studied
分析了自消球差方法检验凸二次非球面的实际可用范围。 |
| 3. | Grade error often occurs in production . the causes for grade error are analyzed and three adjustment methods that are commonly used are described and compared
品位误差在生产中是经常出现的。本文首先分析了品位误差的原因，然后列出了常用的3种平差方法，并对其优缺点进行了比较。 |
| 4. | Abstract : grade error often occurs in production . the causes for grade error are analyzed and three adjustment methods that are commonly used are described and compared
文摘:品位误差在生产中是经常出现的。本文首先分析了品位误差的原因，然后列出了常用的3种平差方法，并对其优缺点进行了比较。 |
| 5. | Meanwhile , in order to reduce computation time , fast estimation method was designed . and by grouping properly , computation rate was improved with the precision of position determination not decreased
同时为了节省计算时间,设计了快速平差方法,通过合适的分组,在不降低定位精度的前提下,提高了计算速度。 |
| 6. | The results show that the correlation between digitized coordinates is obvious . therefore , in order to evaluate the accuracy of digitized data pertinently , it is necessary to process them by correlation adjustment
计算和分析表明，数字化坐标相关性较强，为合理评价数字化数据的精度，应该采用相关平差方法。 |
| 7. | Aimed at the shortcomings of connecting traverse accuracy calculation formula in using , this paper , using adjustment of condition equations method , gives out a group of strict formula , which can be applied to arbitrarily shape connecting traverse error calculation
摘要针对现有附合导线精度计算式在使用上的不足，运用条件平差方法，推导出适合任意形状附合导线误差计算的严密公式。 |
| 8. | A method used for designing a flat - field awg is also presented based on the mspm . in this design , the images of all the channels are on the same line . this greatly simplifies the structure of an awg and makes it much easier to integrate with other devices
在多点消像差方法的基础上，实现了平场型awg器件的设计，使得所有通道波长的成像位置都在同一条直线上，简化了器件的结构，有利于器件集成，使awg器件的设计更加灵活。 |
| 9. | It is more accurate than traditional method at the aspect of calculating head loss , pipe flow and node pressure of hydrant . this mathematic model can also be used in the inside and outside of water supply piping calculation and it is excel hardy cross - piping calculation
该方法在计算水头损失、管段流量、消火栓节点压力等方面比传统方法要更加准确，也可被借鉴到室内或室外的给水管网计算，并优于常见的哈代-克罗斯管网平差方法。 |
| 10. | In this thesis , a multiple - stigmatic - point method ( mspm ) is applied to improve the conventional rowland - type design , which is especially important for designing an awg when the total number of the channels is large . it greatly improves the performance of an awg , such as the channel uniformity , the crosstalk and the insertion loss
文中采用多点消像差方法，对多通道数awg器件的结构设计进行了改进，改善了传统的rowland圆结构设计中存在的缘通道的性能严重劣化的问题，大大改善了多通道数awg各通道性能的均匀性，改善了器件性能。 |
