1) HEC-RAS
HEC-RAS
2) Hec-Ras software
Hec-Ras软件
1.
This paper taking the ShunBi river bridge backwater computation as an example,introduced the basic approaches,the main steps and the attentions in bridge backwater computation when using Hec-Ras software.
以大理至瑞丽铁路顺濞河大桥壅水计算为例,介绍Hec-Ras软件计算桥梁壅水的基本方法、主要步骤及注意事项,Hec-Ras软件界面简洁,操作方便,计算效率较高,值得推广应用,其计算结果与《铁路工程水文勘测设计规范》计算结果相比,雍水高度相差不大,雍水长度相差略大,故仍需进一步探索研究。
3) HEC-RAS model
HEC-RAS模型
1.
Application of HEC-RAS model in simulation of flood;
HEC-RAS模型在洪水模拟中的应用
2.
HEC-RAS model is used to undertake a study of flow behavior and the scour impact in the channel with particular interest in flow characteristics at the bridge opening.
HEC-RAS模型用来对河道中的水流状况尤其是在桥正常运营时航道内的水流条件进行实际分析,旨在预测桥墩周围可能发生的最大冲刷,并将结论用于缅甸将来的桥梁建设事业之中。
4) helium
He
1.
In order to investigate the effects of helium on the excess point defects and secondary defects processes in low activation Fe-Cr-Mn(W, V) alloys during electron beam and electron-He+ ion dual beam irradiation, the in situ observation was carried out using a high voltage electron microscope connected with an ion accelerator.
采用超高压电镜与离子加速器相连结的复合辐照装置,研究了注He对低活性Fe-Cr-Mn(W,V)合金辐照产生的点缺陷及二次缺陷行为的影响。
5) He
He
1.
Mixing and quenching of Cs(6P_J) states induced by collisions with He atoms and N_2 molecules;
Cs(6P_J)+(He,N_2)碰撞精细结构转移和猝灭
2.
Rb(5 P_J)+(He,N_2) collisional energy transfer;
Rb(5 P_J)+(He、N_2)碰撞能量转移
3.
Mixing and Quenching of Rb 5P_J States Induced by Collisions with He Atoms and N_2 Molecules;
Rb(5P_J)与He,N_2的碰撞精细结构混合和猝灭
6) Proton
He~(++)
参考词条
He泡
~(6,8)He
He II
W-HE
HE-AAC
GDC(He)
He~+靶
He-Ne
He/O_2-PBII
Cs-He
Rb-He
He-Ne激光
He同位素
He原子
固He能力
CDMA2000系统
拔甲钳
补充资料:HEC
结构式为[C6H7O2(OCH2CH20H)x(OH3-x]n, x为取代度。是由环氧乙烷与碱纤维素,以氢氧化钠为催化剂,经化学反应醚化而制得。为白色粉末,相对密度0.55-0.75。由于含有亲水性的羟乙基(-CH2CH2OH),因此易溶于冷水或热水,水溶液的pH值为6.5-8.5,对热稳定,加热时不出现凝胶化现象。成膜性好,其水溶液可制成透明的薄膜。无臭、无味、无毒。表现密度0.35-0.61g/cm3,软化点大于140 ℃,分解温度为205℃。
HEC主要用作胶体保护剂,醋酸乙烯乳液聚合的乳化剂、分散剂、增稠剂、稳定剂。贮存于阴凉、通风、干燥的库房内,防潮。
HEC主要用作胶体保护剂,醋酸乙烯乳液聚合的乳化剂、分散剂、增稠剂、稳定剂。贮存于阴凉、通风、干燥的库房内,防潮。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。