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luff n.【航海】1.搶風行駛,貼風行駛。2.船首兩舷的彎曲部...

luffa

They were , says mr stephen , and the end was that the men of the island , seeing no help was toward as the ungrate women were all of one mind , made a wherry raft , loaded themselves and their bundles of chattels on shipboard , set all masts erect , manned the yards , sprang their luff , heaved to , spread three sheets in the wind , put her head between wind and water , weighed anchor , ported her helm , ran up the jolly roger , gave three times three , let the bullgine run , pushed off in their bumboat and put to sea to recover the main of america “此語不差” ,斯蒂芬先生曰, “其結果,本島男子發現負情女子異口同聲,無可救藥。遂建造舟筏,攜家財登船,桅桿盡皆豎起,舉行登舷禮,轉船首向風,頂風停泊,揚起三面帆,在風與水之間挺起船首,起錨,轉舵向左,海盜旗迎風飄揚,三呼萬歲,每次三遍,開動艙底污水泵,離開兜售雜物之小舟,駛至海面上,航往美洲大陸。 ”

The optimization design of portal crane luffing system is the result that optimization design apply in engineering design , but because the engineering problem is complicated , the traditional optimization design method is not very successful . in this paper , the optimization of the single boom system with compensating pulley and level - balancing weight is studied . in the math model , the wire rope length encircled in the pulley and reel is considered , that enhance the optimization precision and introduce genetic algorithms , combine engineering tightly , that settle the difficult in the traditional optimization successfully 門機變幅系統優化設計是將優化設計方法應用于工程設計中的產物,但由于設計工程問題的復雜性,采用傳統的優化設計方法優化的成功率及效果并不理想。本文以單臂架變幅機構導向滑輪補償系統和杠桿? ?活對重臂架自重平衡系統的獨立模型及綜合模型為研究對象,考慮了滑輪和卷筒處包繞的鋼絲繩長度變化,從而提高了優化模型的精度,同時引進一種新型優化算法? ?遺傳算法,緊密結合工程實際,較為圓滿的解決優化過程中存在的問題。

Combining the design of portal crane luffing mechanism , this paper set up the math model independently and synthetically of the single boom system with compensating pulley and level - balancing weight . use genetic algorithms to optimize the model , the calculated results show as follows the genetic algorithms is effective and manipulable , the synthetically optimize is best than independently optimize . the optimization program of luffing mechanism was build , and this will be a useful tool in the design of crane 結合門座起重機變幅機構的設計,建立了導向滑輪補償系統和杠桿? ?活對重臂架自重平衡系統獨立模型和綜合模型的未平衡力矩最小的優化問題,結合遺傳算法對它進行了優化,結果證實了該算法的有效性和可行性,表明了綜合優化比獨立優化更能提高優化的準確性。

Hence there were still faithful men on board when dick returned , one after another of the trio took the pannikin and drank - one to luck ; another with a here s to old flint ; and silver himself saying , in a kind of song here s to ourselves , and hold your luff , plenty of prizes and plenty of duff 當狄克回來之后,三個人一個接一個地端起杯子喝上了一個說“祝好運”另一個說“這一口為老弗林特” ,而西爾弗他本人則用唱歌似的腔調說, “這一口為我們自己,占住上風,廣進財源,大吃肉饅頭。 ”

Just then a sort of brightness fell upon me in the barrel and looking up , i found the moon had risen , and was silvering , the mizzen - top and shining white on the luff of the fore - sail and almost at the same time the voice of the look - out shouted land ho 就在這時,一道光亮射進桶內,照到了我身上,而當我抬頭望時,發現月亮已經升起來了,照得后桅的頂部銀光閃閃,前桅帆的頂上也白花花的幾乎與此同時,觀望的聲音喊起來: “陸地嗬! ”

I ran on deck . the watch was all forward looking out for the island . the man at the helm was watching the luff of the sail , and whistling away gently to himself ; and that was the only sound excepting the swish of the sea against the bow 我跑上了甲板,觀望者正全神貫注在向前注視著島嶼的出現,掌舵的人正在看風使舵,一邊自個兒輕輕地吹著口哨除了海水拍打船頭和船舷的咻咻聲外,那就是惟一的聲音了。

By use of adams software and the mechanical system , the simulating design and optimum analysis of the lorry crane luffing mechanism and the best structural parameters were get based on the original data of anti - processing measure 采用目前使用最廣泛的機械系統仿真分析軟件adams軟件,以反求設計尺寸為初值進行隨車機變幅機構的動態仿真設計和優化分析,以期獲得合理的尺寸參數。

A puff of wind was heeling the boat over till the deck was awash , and he , one hand on tiller and the other on main - sheet , was luffing slightly , at the same time peering ahead to make out the near - lying north shore 一陣風吹來,船體傾斜了,水花濺上了甲板。馬丁一手掌舵一手操縱主帆,讓船輕輕地貼風行駛,同時眺望著前方,要找出不遠處的北岸,沒有意識到露絲在看他。

This ship is a non - propelled fixed luffing 500t steel crane vessel . this vessel is mainly used to lift and hookup the concrete components , bridge blocks , mechanical electrical equipments for harbours , bays , quays and jetty 建港304為非自航固定變幅式500噸鋼質起重船,主要用于中國南海沿海各港灣港口及內河碼頭和堤岸的混凝土構件橋梁機電設備等吊裝工程。

But he luffed the boat less delicately , spilling the wind shamelessly from the sail so as to prolong the tack to the north shore . the shore would compel him to go about , and the contact would be broken 但他駕著船貼風行駛的手卻懈怠了,不顧臉面地讓風從帆邊漏了出去,推遲了到達北岸的時間,因為一到了北岸就得回頭,兩人就得分開。

According to the technological data of the large lorry crane ' s pictures in foreign countries , we use the method of photo - view anti - processing , gain the luffing mechanism ' s structural measure parameter 摘要根據國外大型隨車起重機的圖片等技術資料,運用影像反求圖解的方法,得出其變幅機構的近似尺寸。

The optimizing design for the equalizing system ensured cargo to move horizontally in luffing process , the design method of balancing system achieved ideally effect 補償系統的優化設計保證了貨物在變幅過程中優良的水平位移性能,對自重平衡系統的設計方法和準則可使系統獲得理想的平衡效果。

The fuzzy optimization mathematical model is built with the optimization target of minimizing the volume of tooth corona of worm gear in luffing mechanism of tower crane 摘要以塔式起重機變幅機構中蝸輪齒冠體積最小為優化目標,建立了模糊優化設計的數學模型。

The mentioned method is applied to design of pulley block compensation in luffing mechanism and the results show that the method is feasible and effective 在滑輪組補償變幅機構穩健優化設計中加以運用,結果表明該方法是有效的和可行的。

A brand - new jib - bridge luffing system of crane is brought out based on analysis of the limitation to handle containers of the portal crane 摘要在分析門座起重機用于集裝箱裝卸作業的局限性的基礎上,提出一種新型的起重機變幅系統。

Tom stood amidships , gloomy - browed , and with folded arms , and gave his orders in a low , stern whisper : “ luff , and bring her to the wind ! 湯姆站在船中間,眉峰緊鎖,抱臂當胸,低沉而又威嚴地發著口令: “轉舵向風行駛! ”

So he issued his commands , which i breathlessly obeyed ; till , all of a sudden , he cried , now , my hearty , luff 他這樣發號施令,我聚精會神地聽著,直到他突然大叫一聲, “注意,我的心肝,轉舵向風! ”

A new - type quayside container crane with jib - bridge luffing system as the main working part is brought out 摘要提出一種以臂橋架變幅系統為主要工作機構的岸邊集裝箱起重機。

Brief description of the luffing cable - crane used for the construction of yangtze three gorges project 三峽工程施工用擺塔式纜索起重機簡介