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。
After their first single, chris snelling ' s grounder into right field in the first inning, seattle stranded the runner
S在第一支
滾地球安打
擊出之後，水手隨即讓他擱淺在壘包上。
Two hit scroll screen see purview normal news
雙
擊滾屏查看權限：普通新聞
But one grounder was a fielder ' s choice on a grounder by carl crawford ; it might have been a double play had it been fielded cleanly by second baseman robinson can
其中卡爾
擊出的
滾地球是靠野手選擇上壘；當時要是二壘手卡諾能漂亮攔截下來，說不定就能造成雙殺。
Taylor hit a ground ball to the shortstop
泰勒朝游
擊手
擊出一
滾地球。
Taking advantage of taper roller, this machine can massage and remove the crinkles through continuous vibration, pushing and pressing of the soles placed on the thermal sole marking
經由加熱頂板之燙平作用，以及震蕩
滾輪之敲
擊，再配合鞋子的運轉，使得後跟之幫腳平整，且邊緣棱線非常顯著。
Wang needed only 40 pitches to get through the first four innings. nine of the 12 outs came on the ground as he pounded the strike zone with his two - seam fastball
幫主在前四局只用了40球.他用他的伸卡球攻
擊好球帶，十二個出局數中有九個是
滾地球
There are also many devotees of baseball and softball, table tennis and rifle - shooting, boxing, wrestling, judo, archery, rowing, fencing, gymnastics, ten - pin bowling
當然另外也有很多人著迷於棒球、壘球、乒乓球、射
擊、拳
擊、摔跤、現代柔道、射箭、劃船、
擊劍、體操和十柱
滾木球戲等。
Contrast between this machine and traditional rolling screen : adopt lower driving, the carrying ability is great, running is stable which settle the problem, such as great torsional moment of central drive, startup loading is great with shock of chain driving
本機與老式
滾筒篩相比，因為採用下傳動有承載能力大運轉平穩，特別克服了中心傳動扭矩巨大，起動負荷大，鏈傳動沖
擊等缺點。
Coarse - grained impact resistant grades for mining, working of stones and rock, building, mineral oil industry, percussion and hammer drill tips, inserts for mining cutters, chisels, asphalt cutters, picks, inserts for concrete - working, hammer cheeks rolls, hot wire rolling, ball pressure dies, brake blocks
粗晶粒度的抗沖
擊牌號，適用於采礦工業、採石、建築、石油鉆探工業、鉆頭和錘頭、礦刀的襯墊、鑿子、瀝青切刀、風鎬、混凝土製造的襯墊、錘子的
滾軸、熱軋軋輥、子彈壓力沖模、剎車片。
He kept the ball down and got a lot of ground balls
他持續壓低球路，讓打者
擊出許多
滾地球。
Chapter 6, according to the certain motorcycle, it describes structural radiation yawp, rolling bearing, piston whack, yawp of matching gas of valve cam, gear mesh yawp, burning yawp and the yawp of exhaust and inhaust in details
第六章介紹了對具體摩托車的結構輻射噪聲、
滾動軸承、活塞敲
擊、氣門凸輪配氣機構噪聲、齒輪嚙合噪聲、燃燒噪聲、進、排氣噪聲進行了全面分析。
At borodino the armies meet. neither army is destroyed, but the russian army, immediately after the conflict, retreats as inevitably as a ball rebounds after contact with another ball flying with greater impetus to meet it. and just as inevitably though parting with its force in the contact the ball of the invading army is carried for a space further by the energy, not yet fully spent, within it
任何一方的軍隊都沒有潰敗，而俄軍一經交火便立即撤出戰斗，其所以如此，正如一個球碰到另一個沖力更大的球向它沖來，必然要
滾向一邊去那樣而狂奔而來的襲
擊的球，也必然要
滾出一片空間雖然相撞時失去它全部力量。
Baffled and full of despair, he wandered blindly down the platform where the train was standing, and tears trickled down each side of his nose.
這意外的打
擊，使他非常懊喪，便凄然地走下月臺，淚珠從兩頰
滾落下來。
When you play bowls, the object is to knock down as many of the ten wooden pins as possible.
玩
滾木球游戲時，目標是盡量多地
擊倒十個木瓶。
Over the years people have been crushed, hit on the head, welded and even had molten aluminium poured over them by robots
很多年來，人類被機器碾碎，被重
擊頭部，被電焊到甚至被機器人用
滾熱的鋁溶液到在身上。
In - line skates technyl pa 6 impact modified
滾軸溜冰鞋泰克尼pa6抗沖
擊
In this royal court there are counselors who, when the enemies arrive, are capable of dividing them by their wits ; but there is no use for those battles of wits, no scope for them, when aging and death are rolling in
在這王宮里，有一些大臣，當敵軍攻
擊時，他們能運用機智戰術瓦解敵軍;但是，當年老和死亡之輪
滾滾前來時，那些機智戰術也派不上用場，沒有它們用武之地。
To scroll higher in the tag hierarchy, click the left arrow button in the navigator
若要向標記層次結構中的更高位置滾動，請單擊該導航器中的左箭頭按鈕。
