词汇	yard arm
释义	yard arm 横桅杆臂
随便看	variance theorem Variance-time Analysis variance-time plot variance-time plots variance-time plots method variance to mean method variance-to-mean method variance to mean ratio variance-to-mean ratio variance type variance-type variance value variance volatility variance volume interpretation technology variance within clusters variance within laboratory variance within primary sample units variance with the contract variance work in process variance work-in-process variance yields variancy variancy propagation variand vari angle blade