labor time varianceとは 意味・読み方・使い方

To provide a method for packing a catalyst, in which a pressure drop of each of reaction tubes of a multitubular reactor, in which a solid catalyst is dropped and packed easily, is made small regardless of the kind of the solid catalyst and the variance of the pressure drops of the reaction tubes is also made small to save the time and labor required to pack the solid catalyst.例文帳に追加

多管式反応器に触媒を落下充填するにおいて、固体触媒の種類に関係なく、簡易に触媒充填後の各反応管の圧力損失を軽減し、各反応管毎の圧力損失のばらつきを均質化することにより、触媒充填にかかる時間と労力を軽減する触媒充填方法を提供する。 - 特許庁