By constructing instrument variable in term of the geographic characteristics, we efficiently tackle the problem of endogeneity in the regressions.
本文根据地理特征构造工具变量，有效地控制了变量的内生性问题。
Variable Angle spectroscopic ellipsometry (VASE) is a instrument for measuring optical film refractive index and thickness and is a powerful technique for research on new materials and processes.
可变角度的光谱椭偏仪(VASE)是一种测量光学薄膜折射率和厚度的仪器，它对于新材料和新过程的研究是一种强有力的技术手段。
In many practical measurings of the blast stress wave parameters in rock mass by variable capacity instrument, long wire effect has been discovered.
在变电容仪测量岩体爆炸应力波参量的多次实践中，发现存在着长线效应。
We used SN388 seismic instrument, grouping and deep embedment geophone, variable parameter of viewing system in this researching area, thus improved construction ways.
在本研究区中，采用了SN388地震仪、中密炸药激发、检波器组合并深埋检波器以及可变的观测系统参数，改进了施工方法。
Variable intensity controls for the integral instrument and main instrument panel lights are identified as PANEL and located on the lower portion of the captain's and first officer's panels.
亮度调节面板作为调节亮度的整体及主要手，段位于机长及副驾面板的下方。
It introduces the design methods of multi-variable predictive control CDU and soft instrument, DCS communication interface and project realization of point.
并重点介绍了常减压蒸馏装置多变量预估控制器、软仪表的设计方法，DCS接口通讯及工程实施要点。
It introduces the design methods of multi-variable predictive control CDU and soft instrument, DCS communication interface and project realization of point.
并重点介绍了常减压蒸馏装置多变量预估控制器、软仪表的设计方法，DCS接口通讯及工程实施要点。
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