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- The reasons of using the jet drilling pump in drilling and usageme thods design course are expounded. 闡述了將射流泵應用于鉆井的原因與使用方法,以及鉆井泵的設計過(guò)程。
- The Fe-based composite coatings on Q235 steel substrate were formed by plasma jet surface metallurgy. 采用等離子束表面冶金技術(shù),在Q235鋼表面制備了鐵基合金涂層。
- Results show that ignition delay time becomes longer as loading density of propellants and the distance between propellants and plasma jet increase. 試驗結果表明：增大裝填密度以及發(fā)射藥與等離子體噴孔距離，點(diǎn)火延遲時(shí)間變長(cháng)。
- The main work includes: 1.Large area high quality freestanding diamond thick films have been prepared by DC arc plasma jet CVD apparatus. 所完成的主要工作包括:1.;采用直流電弧等離子體噴射法沉積了較大面積的高質(zhì)量金剛石自支撐厚膜;
- The N-S (Navier-Stokes) equations of the plasma jet were solved to calculate the gas temperature, velocity and oxygen entrainment. 三維模型通過(guò)求解等離子射流的N-S方程得出混合氣體的溫度、速度和氧氣濃度等的分布，其中考慮了粒子與等離子射流的相互作用。
- A high-resolution, multi-line spectroscopic diagnostic system was used to detect two spectral line intensities in plasma jet simultaneously. 摘要采用一套高精度多譜線(xiàn)的等離子光譜診斷系統來(lái)同時(shí)探測等離子體射流中兩條譜線(xiàn)的強度。
- Nanocrystalline free-standing diamond films were deposited by 30kW DC Arc Plasma Jet CVD method on Molybdenum substrate with mixed fed gasses of Argon, Hydrogen and Methane. 在30kW級DC Arc Plasma Jet CVD(直流電弧等離子體噴射化學(xué)氣相沉積)設備上,采用Ar-H2-CH4混合氣體,在Mo的襯底上沉積出納米金剛石自支撐膜。
- Because of the outstanding quality, high efficient, low cost, and the wide raw material sources, plasma jet surface metallurgy will has a potential in market competition. 由于等離子束表面冶金技術(shù)具有突出的優(yōu)質(zhì)高效低成本綜合優(yōu)勢，且涂層原料來(lái)源廣，在市場(chǎng)競爭中具有潛力。
- Air entrainment in plasma jet and metal particle oxidation by the entrained oxygen were investigated numerically using a three-dimensional computational model LAVA-P-3D. 摘要為了研究等離子體射流中空氣的卷吸和由此引起的金屬粒子的氧化，建立了等離子體噴涂的三維計算機模型LAVA-P-3D。
- Diamond film produced DC arc plasma jet is measured by force driven static measuring ultra micr indentation system UMIS 2000.The result shows that hardness of diamond film is related to not only crystal growth direction but also thickness. 使用力驅動(dòng)靜態(tài)超微壓痕測量?jì)x器（Force Driven Static Measuring Ultra Micro－ Inden－tation System ）－ UMIS－ 2000 對由直流等離子體噴射法沉積的金剛石膜進(jìn)行測量。 結果顯示金剛石膜的硬度不僅與晶體生長(cháng)方向和晶粒大小有關(guān)，還與厚度有關(guān)。
- Multi-wall carbon nanotubes have been successfully synthesized under arc-discharge plasma jet conditions from CLR which were produced as by-products in the process of coal liquefaction without any pretreatment or adding any other additional catalysts. 另外,煤的物理、化學(xué)性質(zhì)以及催化劑、水、工作氣氛對碳納米管生成和產(chǎn)量均有影響,其中,煤自身具有粘結性是獲得納米碳管的必要條件。
- Simulation of magnetohydrodynamics for plasma jetting on wire pinch[J]. 引用該論文 王剛華;胡熙靜;闞明軒.
- The influence of atmospheric pressure plasma jet treatment on dyeability of the back and face of wool fabric was investigated and the penetration of its etching into wool fabric was studied. 研究常壓等離子射流處理對羊毛織物正反面染色性的影響,從而探索常壓等離子射流刻蝕在織物中的滲透性。
- The flier is flying a new-type jet plane on trial. 飛行員正在駕駛一架新式噴氣機作試驗飛行。
- The drilling troops mustered on the hill. 演習部隊在小山上集合起來(lái)了。
- A Study of the Rock Breaking Mechanism during Swirling Water Jet Drilling 旋轉水射流破巖鉆孔機理研究
- Ouantitatively Calculating Method of Rheological Parameters of Jet Drilling Mud 噴射鉆井泥漿流變參數定量計算方法
- Flow characteristics of a low power plasma jet 小功率等離子體射流的流特性
- The workman is drilling in the wall. 工人正在墻上打孔。
- Drilling is cutting a hole with a drill. 鉆削就是用鉆頭鉆一個(gè)孔。
