Roll over protective structure ( rops ) is a device which installs on out of construction vehicle. the main functions are : when the vehicle rolling over. rops can prevent the vehicle from rolling over further, and reduce the possibility of rolling vehicle injures operator ; when the vehicle traveling on freezing soil. concrete and rock, it has large resist continuous impact ability ; when the vehicle overturning rops can support the whole vehicle. arrangement of falling object protective structure ( fops ) can block objects ( such as trees, rocks ) so that supply protection for operator. this problem is that research rolling over and falling objects protective structure of bulldozer by learning research condition of rops / fops and relative lay down international standard. on the base of theory analysis. detrudes counting formula of rops / fops deformation through founding mechanics analysis model of rops / fops at the stage of elasticity and plastoelastic. and finds a set of feasible nonlinear finite element analysis counting. lt calculates rops / fops plastoelastic deforma variable of 320hp bulldozer, bulldozer has been carried out by optimizing design method
其主要功能是：當車輛滾翻時， rops能
刺入未凍土壤而阻止車輛的進一步滾翻，降低滾翻的車輛對系著安全帶司機軋傷的可能性；保證rops在碰撞和沖擊變形不大的地面（如凍土、混疑土上、巖
石）時，能具有相當大的抗連續沖擊能力；當車輛已經處于顛覆狀態時，已經變形的rops應能支撐住整車。落物保護裝置（簡稱fops ） ，其構件的布置方式要能遮蔽墜落的物體（如，樹木、巖
石等） ，以便對司機提供適當的保護。本課題主要通過了解國內外有關對rops fops的研究情況和有關國際標準的制定，對大型推土機傾翻和落物保護裝置進行研究，在理論分析的基礎上，通過建立rops fops的力學分析模型，推導彈性、彈塑性階段rops fops變形的計算公式，建立一套可行的rops fops的非線性有限元分析計算方法。
Tell her what heathcliff is : an unreclaimed creature, without refinement, without cultivation : an arid wilderness of furze and whinstone
告訴她希
刺克厲夫是什麼樣的人：一個沒馴服的人，不懂文雅，沒有教養，一片長著金雀花和巖
石的荒野。
Airlines were shanghai ' s biggest gainers, buoyed by falling oil prices and speculation about merger moves in the industry
受到
石油價格下跌和業內合併傳聞的
刺激，航空股是上海股市的最大贏家。
Our main products : wire netting machine, semi and automatism diamond netting machine, facility chain link fence machine, machine with shuttle and non shuttle, crimped wire mesh machine, barbed wire machine, razor barbed wire machine, hexagonal wire netting machine, electric welding net machine, square opening wire mesh weaving machine, shuttleless weaving machine, fiberglass iinsect screening weaving machine, coil & wire winding machine, wire mesh fencing machine, gill netting machine, all types of draw bench machine
主要生產：金屬絲網織網機，半、全自動菱形網機，簡易型勾花網機，無梭織機，有梭織機，軋花網機，電焊網機，點焊網片機，窗紗機，鋼板網機，六角網機，
石籠網機，護欄網焊機，扣絲機，
刺網機，清潔球機，大、中、小型拉絲機等。
By step the special design and have the magnetic goose egg stone, stimulate the acupuncture points glint area naturally. once and again, expel to accumulate in the toxin in, attain the purpose of the strongly built and strong body
通過踩踏特殊設計具有磁性的鵝卵
石，自然地反復
刺激穴位反射區，排除積聚在體內的毒素，達到健美強身的目的。
In autumn 1990, a museum in beijing held an arts and crafts exhibition where over 700 pieces done by prisoners in calligraphy, seal cutting, sketching, oil painting, traditional chinese painting, gouache, clay sculpture, stone carving, jade carving, wood carving, root carving, batik, embroidery, weaving, and paper cutting were displayed, which was well - received by the public
1990年秋，在北京的博物館舉辦了有700多件由在押罪犯創作的美術作品展，內容涉及書法、篆刻、素描、油畫、國畫、水粉畫、泥塑、
石刻、玉雕、木雕、根雕、蠟染、
刺繡、編織、剪紙等，在社會上引起了極大反響。
Hongxing forestry is rich in natural resources, it has 15. 5million cubic meters of active timber reserves, in addition, it has more than one hundred kinds of trees such as korean pine, larch dragon spruce, fir, birch, oak and manchurian ash, etc, gold and iron, etc, many kinds of metal mines, such as abound in free burning coal, marble and limestone deposits ; hundreds of wild medicine materials with developing prosperity, such as acanthopanax, fruit of chinese magnoliavine and dangshen, etc
紅星區自然資源相當豐富，活立木總蓄積1550萬立方米，有紅松、落葉松、雲冷杉、樺木、曲柳等百余種樹木；黃金、鐵等多種金屬礦，長焰煤炭、大理
石、
石灰
石等儲量豐富，礦質優良；
刺五加、五味子、黨參等幾百種野生藥材頗有開發前景。
It has luxuriant forest here with various of rare trees such as korean pine, spruce, manchurian ash, birch, oak an linden, etc. all kinds of wild plant and officinals such as ginseng, dengshen, acanthopanax, fruit of chinese magnoliavine, etc. large amount of mountain delicacies such as an edible fungus, hedgehog, mushroom, brake, etc. abundant mineral resources such as gold, copper, iron, dolomite and limestone, etc
這里有林木繁茂，生長著紅松、雲杉、水曲柳、樺木、柞木、椴木等多種珍貴樹木；野生藥用植物種類繁多，人參、黨參、
刺五加、五味子極為豐富；山特產品質優量大，有木耳、猴頭、蘑菇、蕨菜、
刺嫩芽等，地下資源有金、銅、鐵、白雲
石、
石灰
石等礦藏。
The hot spring of the yellow mountains of nationwide fame, was discovered and tapped more than a thousand years ago. gushing forth from the foot of purple cloud peak, it has never run dry during the most severe droughts nor overflooded during excessive rain. it is of a high - temperature carbonate type, with therapeutic effects for metabolic disorder, cardiovascular disease and malfunctions of digestive, nervous and motorial systems. its clear waters remain at 42c all the year round and can be used for drinking and bathing. baths and swimming pools have been built around the spring
黃山擁有無數從過去留下來的
石刻，這些
石刻不僅僅是優美書法的樣本，也是黃山風景的形象描述： 「百態雲」 「奇美」 「
刺天峰」 「巧奪天工」 「宏偉」 「壯麗山河」 「
石獅咆哮」 「且聽吟」 「臥雲」 「迷人」 「永恆」 「醉
石」等等。
He and the mender of roads sat on the heap of stones looking silently at one another, with the hail driving in between them like a pigmy charge of bayonets, until the sky began to clear over the village
他和補路工都坐在
石頭上，彼此默默地望著。冰雹在他們之間灑落，彷彿是小人國的
刺刀在襲擊。村子上空的天終于放晴了。
Scientists have observed a dolphin trying to get a reluctant moray eel to come out of its crevice by poking it with the spiny body of a dead scorpionfish
科學家觀察到一隻海豚使用多
刺的，已死的蚰魚來戳
石縫中的海鰻，好把它趕出來吃掉。
Sea stars are spiny, hard - skinned animals that live on the rocky sea floor
海星有著帶
刺堅硬的身體，生活在海底的巖
石上。
On a climp, if you come across overgrown brambles, you should have a will as firm as a roch ; in a long and arduous journey, if coufronted with a bleak and boundless desert, you should possess the stamina of a camel
在攀登的道路上，如果遇到叢生的荊刺，你要有巖石的意志;在跋涉的長途中，如果遇到冷寂的荒漠，你要有駱駝的耐力
