使用该仪器后，可测出球面直径尺寸的真实值。
After using this instrument, the true value of the spherical diameter size could be measured.
论述了大型内球面直径在线测量的原理、测量系统的组成及误差修正方法。
The paper discusses the principle of internal sphere diameter measurement on line, composition of the measuring device and the method of the measurement error correcting.
外部直径，外圈的宽度和轴座直径相同的尺寸标准的球面滚子轴承范围。
The outside diameter, outer ring width and shaft seat diameter are identical to the dimensions of the standard spherical roller bearings range.
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