size: n.1.大小，尺寸规模身材。2.(鞋帽等的)尺码，号；(纸张的)开。3.巨大，大量；相当大的分量。4.〔口语〕实情，真相。5.(人的)能力，才干，身价；(物的)质量，特性。6.量珠尺，珍珠筛。7.〔口语〕体重。8.〔古语〕(饭食、酒类的)定量；份饭。 短语和例子full size 如实物大。 life size 如真人一般大〔指雕像等〕。 a size seven hat
We find out the rule that the binding energies of excitons vary with the size of wires in the presence a magnetic field through the calculation . we compare the difference between our considering the mismatch of the effective masses of the wrell and barrier and our not considering the mismatch of the effective masses of the well and barrier 通过计算得出在加磁场的情况下激子的束缚能随线宽的变化坝律，同时我们发现在考虑了粒子的有效质量不匹配时激子的束缚能相对不考虑质量不匹配的情况增大。
