n.放射性同位素

Thus, the chondrules should have made a much greater contribution to radioisotope heating than the refractory inclusions did. 因此球粒提供的放射性同位素加熱，應(yīng)該比耐火包體多。

Absorption of exogenous calcium and sucrose and their deposit onto the cell walls in litchi pericarp were studied by using radioisotope tracer technique. 摘要利用放射性同位素示蹤技術(shù)研究荔枝果皮對外源鈣和蔗糖的吸收及細(xì)胞壁構(gòu)建規(guī)律。