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- The effect of pre oxidation of the Kovar alloy Fe Ni Co on the resulting glass Kovar seal has been studied using metallography, XRD and SEM. 采用金相、 XRD、 SEM观察分析了 Kovar合金 (铁镍钴合金 )氧化膜的连续性、厚度对封接件的透气率、抗拉强度的影响。
- The oxidation weight loss rate of binderless C/C composite prepared by in situ carbonization of pre oxidized fibres(PAN) was tested in the air,at 0.1 MPa,from 673 K to 973 K using thermo weight analysis method. 采用恒温热重法测定了在空气中 ;0 .;1 MPa、673 K到 973 K下预氧丝 (即预氧化聚丙烯腈纤维 )原位炭化无粘结剂 C/ C复合材料的氧化失重率 ;
- The pre oxidizing treatment could retard the nodular corrosion, but could not prevent the Zr4 tube from the nodular corrosion. 预生膜能起到延缓疖状腐蚀的作用,但不能阻止疗状腐蚀产生。
- Keywords sulphide ore;pre oxidation;glassing reagent;XRF; 硫化物矿;预氧化;玻璃化试剂;XRF;
- Keywords refractory gold concentrate;bacterial pre oxidation;ferrobacillus sulfooxidans; 难浸金精矿;细菌预氧化;氧化铁硫杆菌;
- The beer comes out of the barrel under pressure. 啤酒受到压力从桶中流出。
- Our pressure vessel is licensed product. 我厂生产的压力容器是授权生产产品。
- Loss of pressure had not registered on the dials. 刻度盘未记录压力下降。
- Air pressure forces the water through the pipe. 空气压力使水通过管道。
- What's the atmospheric pressure today? 今天的气压怎么样？
- The water pressure may need adjusting. 水压可能需要调整。
- Pressure is force per unit area. 压力就是电单位面积上的力。
- He drop out because of the pressure. 由于校规很严，所以他退学了。
- It took a bit of pressure to make the lid close. 要稍按一下才能把盖子盖紧。
- It was done under the pressure of the necessity. 这件事是在迫切需要的情况下而做的。
- At high pressure dry ice will melt. 高压下干冰会溶化。
- The gas is stored under pressure in the tank. 该气体在压缩状态下贮存于罐中。
- The metal frame tends to twist under pressure. 这种金属框受压後容易变形。
- His health collapsed under the pressure of work. 他的身体被工作压垮了。
- The glass (ie atmospheric pressure) is falling. 气压在下降。
