众所周知，边角网平差时应进行方差分量估计，以使观测权趋于合理。
It is known that during the side and Angle adjustment of networks, it is necessary to do the variance components estimation to make the weights of observations rational.
对中精度一定情况下，微型边角网的短边测角误差相对大些，其成果应作不等精度混合平差。
Under a certain aim-mid precision, the error of short line Angle survey of the mini brim-angle net is bigger, so the production should be done the unequal precision mixable adjustment.
说明在测角网、测边网、边角同测网和导线中产生长边条件的情况。
The situation in which it produces long side condition in triagulation net, trilateration net, triangulateration net and traverse is explained.
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