gains from proportionate stratified sampling

例句：

1. 1. The company's profits increased significantlydue to the gains from proportionatestratified sampling.
   由于比例分层抽样带来的收益，公司的盈利显著增加。
2. 2. The research teamdiscovered that the gains from proportionatestratified sampling could be significant for theirproject.
   研究团队发现，比例分层抽样为他们的项目带来了可观的收益。
3. 3. The gains fromproportionate stratified sampling were usedto fund further research in this field.
   通过比例分层抽样获得的收益被用于资助这一领域的进一步研究。