Off-line collections such as the eGranary Digital Library can provide local access to a critical subset of Internet resources where Internet access is unreliable or over-subscribed.
离线收藏，如egranary(粮仓)数字图书馆，可以在互联网接入不可靠或过多订购的地方提供本地访问互联网资源的关键子集。
Digital railway is the subset of Digital earth. It is also a epitome of Digital earth that is huge system engineering.
“数字铁路”是“数字地球”概念的一个子集，也是“数字地球”这一庞大系统工程的一个缩影。
Digital signal processing and analog signal processing is a subset of signal processing.
数字信号处理与模拟信号处理是信号处理的子集。
The results show that increasing the number of least squares fitting terms and reasonable selection of digital image correlation subset size improve the accuracy of calculated stress intensity factor.
结果表明，增加最小二乘拟合项次和合理选择数字图像相关计算子区域和步长大小可以提高应力强度因子计算精度。
The results show that increasing the number of least squares fitting terms and reasonable selection of digital image correlation subset size improve the accuracy of calculated stress intensity factor.
结果表明，增加最小二乘拟合项次和合理选择数字图像相关计算子区域和步长大小可以提高应力强度因子计算精度。
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