It is shown that vibration drilling entirely changes drill-entry mechanism of common drilling, remarkably improves drill-entry spotting accuracy.
分析结果表明,振动钻削改变了普通钻削的钻入机理,显著提高了钻入定心精度,特别适合微小孔的精密和超精密加工。
(You could, for example, suggest that I turn the heat off entirely, but that's not realistic.) How much can be gained just by making marginal-not radical-changes?
(举个例子,你可以建议我完全关闭供暖设备,但这显然是不现实的)如果只是做些细微的改变——不是大刀阔斧似的——我们又能得到些什么?
The increase in obesity cannot be entirely explained by changes in diet, physical activity, television watching, and food advertisement.
肥胖的增加,并不能完全归咎于饮食变化,体育活动,看电视,和食品广告。
应用推荐