drum tender,rosser

The coarse grinding technology,which can grind the surface fault on spring steel of electric lo comotive prima ry suspension system,causes the accurate di ameter size of spring bar.

通过“剥皮”工艺去除电力机车转向架一系悬挂装置热轧弹簧钢毛坯表面的缺陷层,从而获得精确有效的弹簧材料直径尺寸,对提高一系弹簧整车匹配性能,以及机车运行的平稳性是非常有利的。

Experiment carried out on annular skning and semi-annular skining of Magnolia officinalis, an endemic tree species and an important medicine plant, on effect of stand closure,skining period and packing with paper on reclamation.

对我国特有树种、重要中药材资源厚朴开展环利与半环剥，以及林分郁闭度大小、剥皮季节、剥皮后用纸包扎与否对再生新皮的影响等内客的试验，并进行试验后观察与再生皮、原生皮成份的测定，结果表明，只要正确掌握厚朴剥皮技术，厚朴剥皮2～3年，再生皮即可达到原生皮厚度，3～5年后再生皮的药用成份合量基本达到原生皮的水平。

Large-area experiment on skining Eucommia ulmoides resulted that reclaiming effect increased along with temperature.

为适应生产需要，对杜仲进行大面积剥皮试验。

Comparative experiments on difference between the first and regenerative bark of Quercus suber Land Quercus variabilis BI in stripping degree of diffcalty, bark content, regeneration speed and rate, outwardappearance, quality, chemical composction, geographical position have been carried out.

对栓皮槠与栓皮烁树初再生皮在采剥难易、含皮量、再生速度、再生率及其栓皮在外观、质量、化学组成的差异及地理差异等方面进行的对照试验结果表明：栓皮槠栓皮质量好，再生能力强，产皮厚，剥皮工效高，经济效益好，是优良栓皮树种，可用来改造我国的栓皮烁林。