The landform evolution of Xianyang since the end of Qin Dynasty contains two aspects, the northward moving of the Weihe River bed and the changing of the edge slope of Xianyang tableland.(秦末以來，秦都咸陽地貌演變包括渭河河道北移和咸陽原邊坡地貌變化兩個方面。)

The coldest area is in the plateau area of Tasmania and southeast corner of the tableland and mainland.(最冷的地區在塔斯馬尼亞的高原地帶及臺地和大陸的東南角。)

Qingyang Town, the territory is mountainous, the western region only has a little flat tableland.(青羊鎮境內全是山區，僅西部有少許平緩臺地。)

All architecture on the tableland is defensive, all monuments are like forts.(在這高原上，所有建筑樣式都是防御式的，所有遺跡都像要塞。)

From component and the content of mineral, old plant tea and tableland tea have their own top quality.(從理化成分與礦物質含量來看，老樹茶與臺地茶各有千秋，不能簡單、武斷地講誰優誰劣、誰好誰差。)

In the Southern Tableland (Nanyuan)of Jingyang County, Shaanxi Province, the loess landslides often occur along the slope of the tableland, causing heavy casualties and serious economic losses.(陜西涇陽南塬塬邊黃土滑坡頻繁發生，造成的經濟損失和人員傷亡極為慘重。)

Few of tropical Africa's rivers are navigable from the ocean, dropping as they do from interior tableland to coastal plains by a series of falls and rapids.(酷熱的非洲，幾乎沒有適于航海的河流，這些河流從內陸高原到海岸平原一路穿瀑布、過險灘，傾流而下。)

Note:1 means single phase, 3 means three-phase, Gmeans using in tableland area. Our company may have different dimension and specification products made to clients requirement.(注：尾號“1”表示單相，帶“G”表示在高原地區使用；本公司可根據客戶的需求頂做不同規格尺寸的產品。)

So, develop the system research for the single distributing vale experiment method and standard will safeguard for the tableland railway.(因此，建議開展高原環境下單閥試驗標準和試驗方法的系統研究，為高原鐵路安全開行提供保障。)

Physical Features: Tableland and alpine valleys make up the main landform of the prefecture.(地理特點：阿壩地形以高原和高山峽谷為主。)