“perforations”的概念、定义、翻译、参考文献-科学参考

单词	perforations
释义	perforations [´pǝr·fǝ`rā·shǝnz] ^{GRAPHIC ARTS} Small rectangular sprocket holes along the edge of film. ^{PETROLEUM ENGINEERING} Downwell holes made in well tubing, usually by shot-and-explosive or shaped-charge techniques; used for oil or gas production from desired horizons, or for injection of acidizing or fracturing fluids into the formation at predetermined depths.
随便看	initial heading initial instructions initial inverse voltage initialize initial landform initial lead initial line initial lock mechanism initial mass initial mass function initial nuclear radiation initial orders initial permeability initial potential initial program load initial program load button initial saturation initial set initial shot start pressure initial surge voltage initial-value problem initial-value theorem initial velocity initial yaw initiate

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