常見例句雙語例句The third type has double porosity system, and the build-up curve has a stepwise form.縫洞孔復(fù)合型具有雙重孔隙介質(zhì)的特點(diǎn)，壓力恢復(fù)曲線具多臺階型。The first and second derivative plates of concave pressure build-up curve are presented in this paper.本文提出了凹型壓力恢復(fù)曲線的一階導(dǎo)數(shù)圖版和二階導(dǎo)數(shù)圖版。Especially in low permeability reservoirs, a qualified pressure build-up curve can not be obtained frequently.特別在低滲儲層中，往往不能得到一條合格的壓力恢復(fù)曲線； 返回 build-up curve