For example, engineers designing a pavement do not have to base their attempts entirely upon experimentation, but can use reference sources that describe the conclusions of others.
例如，设计路面的工程师并不一定要把他们的尝试完全建立在实验的基础上，而是能用其他人的结论作为参考。
The reference sources in designing industrial wastewater treatment unit and system include experimental and operational data of existing projects.
工业废水处理工艺单元和系统的设计参考依据的来源主要包括实验研究和现有工程运行数据。
The technology of real time auto-correction by using multiple reference sources in measuring circuit in resistance transducer is introduced.
介绍了在电阻式传感器测量电路中采用多基准源进行实时自校正的技术。
The source of the nonlinear characteristics of reference sources is discussed, and several common high-order temperature compensation methods are introduced.
本文研究了基准输出非线性的来源，分析对比了常见的温度补偿策略，并进行了性能对比。
The library has quantities of reference sources.
该图书馆藏有大量可供参考的原始资料。
Many older catalogs and reference sources use an older standard epoch based on the start of the Besselian year 1950 - this epoch is called "B1950.0".
很多老的星表和参考源使用的是一个更早一点的标准历元，这个较早的历元按照贝塞尔年的开始-1950年建立起来的。
Many older catalogs and reference sources use an older standard epoch based on the start of the Besselian year 1950 - this epoch is called "B1950.0".
很多老的星表和参考源使用的是一个更早一点的标准历元，这个较早的历元按照贝塞尔年的开始-1950年建立起来的。
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