yieldv.生产；获利；屈服；弯下去n.投资收益；生产量yield effect产量影响yield stress屈服应力； 屈服点yield to put出售收益率yielding seat弹性支座yield of coal煤产量yield of rice水稻产量yields of oil含油率yield a pointvi.让步yield-limitn.屈服极限yield surface生长曲面, 屈服曲面