3) property of cave environment
洞穴环境特性
4) caves
[英][keiv] [美][kev]
洞穴
1.
Study of Database Construction of Karst Caves in China;
中国岩溶洞穴数据库建设研究
2.
High-frequency seismic prospecting used to find caves in the rock-mass below stakes;
桩位下浅层基岩内洞穴的高频震波勘探研究
3.
When it was being drilled,a vertical well was drilled at first,and caves were made in coalbed gas sect,then a horizontal well were drilled at a distance of 200 m,horizontal segment were in connection with the caves,and 10 branch holes were lateral drilled symmetrically in horizontal sect.
钻进时,先钻一口直井并在煤层段造洞穴,在距200 m处钻一口水平井,水平段连通洞穴,再在水平段上对称侧钻出10个分支井眼。
5) cave
[英][keɪv] [美][kev]
洞穴
1.
Detecting badger cave disease in embankment by ground penetrating radar;
堤防动物洞穴的探地雷达探测研究
2.
Grouting applied to treatment of roadbase cave in loess areas;
注浆法在黄土地区公路路基洞穴处理中的应用
6) Cavity
[英]['kævəti] [美]['kævətɪ]
洞穴
1.
When the ion cyclotron resonance heating is adopted in Tokamak, in order to protect the antenna in a better way, the antenna is usually placed in the cavity.
在托卡马 克中采用离子 回旋共振加热时 ,为了更好地 保护 天线,常 常把天 线置 于洞穴 内。
2.
A finite element method with perfectly matched layers(PML) is developed for wave scattering from a two-dimensional cavity embedded in an infinite ground plane.
给出二维洞穴散射问题的带有吸收边界层的有限元方法。
补充资料:阿尔塔米拉洞穴壁画
阿尔塔米拉洞穴壁画 rock paintings of Altamira Cave 欧洲旧石器时代晚期壁画。在西班牙北部桑坦德市的阿尔塔米拉洞穴内。1879年发现。最初学术界不同意是原始人的作品,至 1902 年才获承认。洞穴长270米,大部分壁画分布在长18米的侧洞的顶和壁上。内容主要是涂有红、黑、紫色的成群野牛,还有野猪、野马和赤鹿等,总数达150多只。这些动物形象描画得细腻生动,栩栩如生。其中画一头野牛受伤卧地,低头怒视前方,把牛的野性表现得十分逼真,被公认为世界美术史上原始绘画的代表作。洞中还有镌刻的人物形象及手轮廓图形等。在洞穴前部,发现了旧石器时代晚期文化的遗物,为确定岩画的年代提供了证据。一般认为,壁画内容可能与原始人祈求狩猎成功的巫术活动有关。
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