体积小；光学透镜，光线清晰，低发散度，垂直度好，高精确度，工业适用性强。
It has small body, optics, clear beam and low divergence and favorable verticality and high accuracy and industrial strength.
该磁座钻的电钻轴心线与基面垂直度好，钻孔加工精度高，有很好的推广应用前景。
The utility model has the advantages that the verticality of the axial lead of the electric drill and a basal plane is good, and the machining precision of drilling holes is high.
该磁座钻的电钻轴心线与基面垂直度好，钻孔加工精度高，有很好的推广应用前景。
The utility model has the advantages that the verticality of the axial lead of the electric drill and a basal plane is good, and the machining precision of drilling holes is high.
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