培养试管 meaning in English

culture test tube

For several decades , many scientists have been working hard at reducing production cost , simplifying the industrial process , increasing the coefficient of propagation , but as for the rapid propagation of most economic plants , people still can not transform the technique of tissue culture into great productivity in large scale
这一点更像组织培养试管快繁的优点。越到后面的代数，繁殖的种质资源材料越多，繁殖的速度越快，成本越低。快繁苗木随著按几何级数高效增殖的同时，快繁生产成本却不断得到稀释。