我们在做数据分析的时候，经常需要产生一些重复序列。例如，做差异表达分析时需要用到的分组变量，绘制...
X-axis manual sliding table High-precision dovetail rack and pinion extended type SEMC1C-100 table size 30*50mm without scale The product is original second-hand, and the condition is as good as the picture. We remove it from the normal equipment, and we make sure that the product functio...