“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	potassium fluoride potassium fluosilicate potassium gluconate potassium glutamate potassium glycerinophosphate potassium glycerophosphate potassium gold chloride potassium gold cyanide potassium hydrate potassium hydrogen phosphate potassium hydrogen phthalate potassium hydroxide potassium hyperchlorate potassium hypophosphite potassium iodate potassium iodide potassium linoleate potassium manganate potassium metabisulfite potassium metarsenite potassium monophosphate potassium muriate potassium nitrate potassium nitrite potassium oxalate

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