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- 非調質(zhì)D級抽油桿用鋼as-rolled and tempered steel for D-level sucker rod
- 超高強度抽油桿用非調質(zhì)貝氏體鋼摩擦焊接頭的力學(xué)性能Mechanical properties of friction welding joint of non-quenching and tempering bainitic steel for super-strength sucker rods
- D級抽油桿用鋼斷裂韌性的評定Evaluation of fracture toughness of API Class D sucker rods
- D級抽油桿用20CrMo鋼疲勞試驗Fatigue bet of 20CrMo steel for Grade D sucker rod.
- 有調中轉車(chē)停留時(shí)間Detention time of car in transit with resorting
- 無(wú)調中轉車(chē)停留時(shí)間Detention time of car in transit without resorting
- 25%戊唑醇乳油防治香蕉葉斑病藥效試驗Ettect of 25%25 Tebuconazole EC on controlling banana leaf spot diseases
