h an H-beam steel H形钢条。 an H-Post H形电杆。 drop one's h's 不发h音〔如伦敦方言中把 hat 读作'at 〕。 H hour 【军事】发起攻击的时间;特定军事行动开始的时刻。 = 【电学】 henry; 【化学】 hydrogen; 【物理学】磁场密度 (intensity of magnetic field), 地磁水平分量 (the horizontal component of terrestrial magnetism); 〔表示铅笔芯硬度的符号〕= hard(ness); 〔俚语〕heroin. H1 = 【化学】protium. H1+ = 【物理学】proton. H2 = 【化学】deuterium. H3 = 【化学】tritium.
The high frequency welded light gauge h sections for construction 结构用高频焊接薄壁h型钢
Structural steel i and h sections . tolerances on shape and dimensions 工字型和h型结构钢.形状和尺寸公差
Structural steel i and h sections - tolerances on shape and dimensions 工字型和h型结构钢.形状和尺寸公差
Structural steel i and h sections ; tolerances on shape and dimensions ; german version en 10034 : 1993 I型和h型结构钢.形状和尺寸公差
Metal construction . hollow section welded assemblies on type i and h sections . design and verification 金属结构件.圆形或矩形空心型材i或h型焊接件.设计和检验
Simplified theories are also presented for curved beams with commonly used sections , such as i - shape , channel and h section without any symmetrical axis . linear analysis is also performed in combination with finite element method 其后就常见的截面形式(单轴对称工字形、槽形和无对称轴的形截面) ,对所提出的曲梁理论进行简化,并结合有限元方法求解曲梁的线性问题。
They can be found in circular cast houses of blast furnace , in oil - sealed dry gasholders and in workshops with curved cranes . cross sections of these curved members are of various types , such as il - shaped , i - shaped , channel , box and h section without any symmetrical axis 曲线梁在工业和民用建筑中也常有应用,在高炉环形出铁场、干式煤气柜内部结构以及某些有工艺要求的厂房内,常需采用不同截面形式的环形曲梁。
At present , company has two fabrication lines specially designed for welding h section , advanced cutting , welding , assembling , rectifying , digital controlled hole drilling machine , blasting and coating facilities , level ii steel structure design software x - steel ( originated from finland ) and pkpm 目前拥有焊接h型重钢生产线两条,拥有先进的切割、焊接、组立、矫正、数控制孔、抛丸、喷涂等设备;拥有先进的钢结构二次设计专业软件x - steel (芬兰进口)和pkpm 。
At present , many products developed by the company have won scientific and technological achievement award of tianjin , such as finishing equipment in 500 hot - rolled ribbon steel production line , 750 hot - rolled band steel production line , roughing and finish rolling equipment in 1070universal h section productionline 目前公司开发研制的“ 500热轧窄带钢生产线精装精整设备” 、 “ 750热轧带钢生产线” 、 “ 1070万能h型钢生产线粗精轧设备”等多种产品均已获得了天津市科技成果奖。
Moreover , the adjusting performance of reactive compensators is not so satisfactory under transient conditions . based on the conventional control scheme , this paper applies a new supplementary b controller , with its feedback signals reflecting the abnormal system conditions , to modulate the inverter reactive consumption and improve the stability of weak ac / dc system . h section of the additional controller makes its operation more robust 本文利用了直流输电的快速调节特性,在常规控制方式的基础上,采用了一个新的附加控制环节,即在逆变端附加了一个控制,利用能反映系统异常运行情况的变量作为其反馈输入信号来调制换流器吸收的无功,从而提高弱交流直流系统的稳定性。