以开心形丰水梨幼树为试材，通过轻剪、重剪和不修剪处理对其树体生长指标、产量、根系分布度进行比较分析。
The young trees of open-center shaped Housui pear were used as the material to study the effect of different pruning rate(light, heavy and no) on the pear tree growth, fruiting and root growth.
采用外观和金相方法，对止血钳和手术剪锻坯出现的型腔填充不满、裂纹、重皮和切边撕裂等缺陷进行分析。
Forging defects of mould cavity non-saturate, crack, pucker and shearing edge avulsion, etc. on the astrictive clamps and operating scissors are studied by means of appearance and metallography.
介绍了冷轧切边重卷机组改造中，新设计切边圆盘剪及碎边剪的设备组成、主要技术参数及设计结构特点。
The mechanical composition of newly designed side trimmer and chopper in transform to cold rolling recoiler line, and of main technical data and features in designing structure are introduced.
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