The formula of final error in the oxidant reduction titration is deduced according to the principle that the inconsistency of titrating final and chemical calculating point leads to the final error.
根据滴定终点与化学计量点不一致而导致终点误差这一原理，推导出氧化还原滴定的终点误差公式。
Based on the diffraction optical principle, a formula of the diffraction efficiency and etching depth error of the microlens is obtained.
基于衍射光学原理，获得了微透镜的衍射效率与蚀刻深度误差之间的关系式。
The principle of the analog-digital composite compensation technique is described and the factors causing fitting errors arc analyzed. The formula for calculating the maximum error is derived.
还叙述了模-数混合补偿技术的工作原理，分析了引起拟合误差的因素并推导出计算最大误差的公式。
According to mirror image principle. a simple and practical formula for numerical match and a dependence for estimating truncation error of summing up infinity terms are proposed out.
文章根据镜像原理，提出了简单实用的数值拟合公式与求无穷和项截断误差估计关系式。
Progress, principle and flow-formula, main error, application situation and prospect of bend pipe flowmeter are described.
主要叙述弯管流量计的进展、原理及流量公式、主要误差、应用情况以及前景等。
From the principle of refraction, concludes a formula of the influence, which must be a term in the refraction residual error model.
从折射修正的原理出发，推导了该项误差的表现形式。
From the principle of refraction, concludes a formula of the influence, which must be a term in the refraction residual error model.
从折射修正的原理出发，推导了该项误差的表现形式。
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