It is frequently referred to as "pressure head" when expressed in terms of energy per unit weight of water . 當以單位水重的能量來表達時,經(jīng)常看作為“壓頭”。
Perhaps a key adaptive advantage of the angiosperm is their ability to construct wood with much less expenditure of energy per unit weight . 也許被子植物適應(yīng)優(yōu)勢的秘訣就在于它們有能力形成每單位重量的木材可支付少得多的能。
Test on supervision and control of dry unit weight of warping dam 淤地壩干容重的監(jiān)理控制試驗
Unit weight approach for model sediment 模型試驗的泥沙重度淺析
Study on the relationship between maize unit weight and the water content 玉米容重與水分相關(guān)性分析