The paper analysed contact fatigue performances of vacuum degasification steel and common electric steel.
试验并分析了真空脱气钢和普通电炉钢的接触疲劳性能。
Through to observing the section microstructure, and according to Fe-W-Mo-Cr-V-C the high-speed steel Fe-C micro dual phase diagram, the reason of vacuum gas quenching the high-speed steel melting accident was analyzed.
通过对截面金相组织观察,并根据Fe-W-Mo-Cr-V-C系高速钢Fe-C微二元相图,对真空气淬中高速钢工件发生熔化的原因进行了分析。
W18Cr4V steel was heat-treated by vacuum gas quenching and conventional oil quenching respectively.
采用真空气淬法和普通空气加热油淬法分别对W18Cr4V钢进行热处理。
Service conditions,Processes of vacuum gas quenching and vacuum tempering as well as vacuum stress relief annealing processes realized respectively before quenching and during service as well as after repair welding for the die-casting die parts of 4Cr5MoSiV1 steel were discribed.
论述了4Cr5MoSiV1钢制铝合金压铸模零件的服役条件,真空气淬、真空回火工艺,以及分别在淬火前、使用过程中和补焊后进行的真空消除应力处理工艺。
The Cleanliness of gas cylinder steel(30CrMo) was studied during vacuum degassing by interrupting vacuum after the start of operation.
本文研究了真空脱气(VD)精炼对气瓶钢30CrMo洁净度影响。
Connecting Technology of Vacuum Channel on Producing Titanium Sponge by Kroll Process
克劳尔法生产海绵钛的真空通道连接技术
It is concluded that the single suction double acting unit with balance passage is better than the double suction unit without balance passage.
得出了开平衡通道的单级抽气可以设计得比不开平衡通道的双级抽气真空泵真空度高的结论。
Comparison of vacuum is made between the single and double suction vacuum pump, between the unit with balance passage and that without balance passage.
对单级与双级抽气开平衡通道与不开平衡通道的真空泵的真空度进行了对比分析。
Using HSV space real-color image enhanced by homomorphic filter in two channels
利用HSV空间的双通道同态滤波真彩图像增强
Discussion of Vertical Drainage Channels for Numerical Analysis of Vacuum Preloading
真空预压数值分析中竖向排水通道的讨论
Do light waves travel through a vacuum?
光波真的通过真空吗？
The air passage is called the air bleed.
空气通道叫通气孔。
Modulation and Channel Model Simulation in Deep Space Communication System
深空通信系统中的调制技术与信道模型仿真研究
Liquid nitrogen container on high temperature superconducting maglev which fits to evacuated tube transportation
适用于真空管道交通的高温超导磁悬浮车低温液氮容器
The vacuum system consists of vacuum pumps, vacuum pipelines, vacuum valves and vacuum measurers.
真空泵、空管道、空阀门和真空测量头组成了真空系统。
Fungal spore spreads with the air in opened tunnel which makes mycetes in aisle and room higher than in the control group.
通风式坑道因形成空气对流,真菌孢子依靠气流向周围播散,通道和房间均明显高于对照组。
emptied by being pumped out or having a vacuum created.
通过抽空或者制造真空来使之空。
Exhaust vaporous wastes through a pipe.
通过管道把废蒸汽排空
These are simply air passage.
这些都是空气的通道。
Air pressure forces the water through the pipe.
空气压力使水通过管道.
Numerical Simulation on the Aerodynamic Drag of High-Speed Train of Evacuated Tube Transportation System;
真空管道运输高速列车空气阻力数值仿真
General technical specification of vacuum packaging machine and vacuum-gas flushing packaging machine
GB/T9177-1988真空真空充气包装机通用技术条件
Restricted airspace for the passage of aircraft.
航空跑道飞机通过的有限空间