difficult load 中文意思是什麼
difficult load
解釋
難裝卸的貨物-
In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後，對巖土工程領域至今尚未解決，甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討，提出了考慮地基變形的地基承載力上程計算方法；對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎（空間問題）的承載力界限荷載p _ （ 1 / 4 ） ，並與國內外土力學專著及地基基礎設計規范中的條形基礎（平面問題）的界限荷載p _ （ 1 / 4 ） ，進行了對比，從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況；根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作，本文以截頭錐模型模擬地基，對地基（巖基）承載力的動測法進行了研究，為各類地基（包括巖基） ，匯總了動力分析和檢測川的參數：針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題，從巖石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論；本文作者根據多年現場載荷試驗的工程實踐，對深井荷試驗裝置的核心部分? ?反力裝置，設計了側壁支撐反力加載系統，該加載系統具有實用、簡便、穩定及安個等優點。 -
It is difficult to test the moving - load - induced dynamic vertical displacement of a floating bridge, because the vertical displacement of a floating bridge consists of the contributions from the structural deformation, the variations of the gaps between the pontoons and the variation of the draught, and it is much larger than that of an immovable bridge
摘要通載浮橋的動態位移，由於其位移幅度相對于固定橋要大得多，而且其垂向位移是由結構變形、間隙變化以及吃水變化等多種因素引起，一般難以對其進行動態位移測試。 -
" hump " suggests that the load is heavy and difficult to move and is carried on one 's back or shoulders.
「Hump」指以背或扛的方式移動笨重而難以移動之物。 -
Power consumption by peak load cutting is a difficult work
摘要油田生產中避峰用電較困難。 -
The load is changed with many factors such as temperature, magnetic reluctivity, etc. and its parameters are difficult to measure. so the worst working situation is difficult to know, which is a serious problem when the starting issue is studied
在研究逆變器的啟動問題時，由於負載變化大，參數很難準確的測量，無法得知可能出現最嚴重的工況，給研究帶來了很大的困難。 -
However, the efficiency of pwm at light load is low and the filter design of pfm is rather difficult due to the random characteristic of the frequency spectrum distribution
採用相應調制方式的ic品種繁多，各有千秋。但pwm在輕載時效率較低，而pfm由於頻譜分佈隨機，不利於后續濾波器的設計。 -
The fire load of underground commercial building is very large and controlling fire is difficult
同時，地下商業建築的火災荷載大，且地下商業建築的防火救火工作具有相當大的困難。 -
In the areas of impact dynamics and high velocity impact dynamics, measuring impact load and pressure between two contacted interfaces is still a difficult work. polyvinylidene difluoride ( pvdf ) piezofilms are of interest to solve the above problem as potential gauge materials since they have quick response to dynamic load and available plasticity
在碰撞及高速碰撞動力學的研究中，界面與界面之間壓力、撞擊載荷隨時間的變化等的測試一直是一個難題， pvdf壓電特性的發現為解決這一難題提供了可能。 -
It was difficult to measure the load voltage directly between inner and outer conductor of cable induced by shield current under low flux x ray. this paper introduces a measurement, pouring a current, which was same as cable approximately photocurrent in x ray test, into the shield of cable with a triocoaxial system, and the load voltage was got. finally the measured result of typical cable and comparison with the calculation was given with a special load
在簡要介紹屏蔽電纜的轉移阻抗和轉移導納耦合的基礎上，描述了利用三同軸系統對雙電纜和等效負載組成的電纜系統進行電流注入，模擬電纜屏蔽層發射電流，測量芯線等效負載感應信號的實驗，給出實驗結果及分析，並對理論結果與實驗進行了比較。 -
However, people studied the riverway mainly by field survey and landform map contrast before. because of the limits of man ' s field view and complexity of field survey route, it is a difficult bottle neck for people to make synthetical analysis on geological structure, yangtze river shoal, floodplain, terrace, and microcosmic suspended load on macroscopical scale
而以往的河道研究大多數是通過地面調查和地形圖室內對比分析來研究的（少數運用航片） ，由於受人的視域范圍及調查工作路線的布置的復雜度影響，對區域宏觀尺度下的地質構造、長江沙洲、漫灘、階地及河流微觀領域的懸浮物等作綜合性的研究便成為了瓶頸。 -
In this paper, the mechanism and practical effect of existing coordinated control schemes are analyzed in detail, the advantage and drawback of the different coordinated control methods in practice are indicated clearly. this paper describes a fact that it is difficult to obtain rapid load response and stable main parameters at the same time by using the recent methods, underlines that heat release is the vital parameter that should be carefully controlled
本篇在吸取了目前各種協調控制系統的優點的基礎上，提出了改進后的協調控制方案，主旨為以控制鍋爐的熱量釋放信號為核心，採用具有內在穩定特性的控制方案，充分加快機組的負荷響應速度，在機組所帶負荷已經接近當時的極限，及時限制輸出功率的增長，達到穩定機組的目的。 -
It is very difficult to monitor the widely applicable bearing with low speed and high load because of its own structure and operation features. there are few reports on the monitoring and fault diagnosis of bearing with low speed and high load
應用廣泛的低速重載軸承由於其自身結構及運行的特點，監測起來比較困難，目前有關低速重載軸承狀態監測與故障診斷的研究報道尚不多見。 -
And then, the vibration signal of the bearing with low speed and high load is analyzed and fault is diagnosed through wavelet transform method. seen from the comparison of the two methods, it will be difficult to diagnose fault of the bearing with low speed and high load through the former method
通過實驗發現，小波分析對低速重載軸承的故障診斷能夠取得比較好的效果本文研究的核心是工控微機，在windows2000平臺上，軟體採用visualc + +及labview設計。 -
It is difficult to replicate hinge moment accurately and rapidly because surplus torque affect dynamic performances of load simulator system badly with large intensity and continuous variation derived from variable velocity of rudder system
這種干擾作用具有強度大、隨舵機速度不同連續變化的特點，它的存在嚴重影響了負載模擬器的動態性能，使得加載系統難以準確、快速地復現空氣動力鉸鏈力矩。 -
There are many plants that have the character of time - varying, large delay, large inertia in the process of production of modern power station such as the superheated steam temperature, the reheated steam temperature, the water treatment of boiler and the load regulation. some of them have the strong character of nonlinear and some of them are multivariable coupling systems it is very difficult to obtain good effect of control by conventional pid control. it is necessary to set up the mathematics models of controlled plants if applying control means of modern control theory such as self - adaptive control, optimal control ， decoupling control and predictive control. and these control systems have large calculation and bad character of real time in general. these disadvantages make them be not able to meet the need of real production process and limit the application of them in modern power station. now the generator units are developing towards large capacity and high parameters. many new kinds of generating electricity means are coming into being. the characers of production units of power station become more and more complex but the demand to quality of control becomes more and more strict. the new control means are in bad need to control them effectively
現代電站的生產過程中存在過熱汽溫、再熱汽溫、鍋爐水處理、負荷調節等許多大遲延、大滯后、特性時變的對象，它們中有些還是具有強非線性特性的對象或多變量耦合系統，採用常規的pid控制手段很難取得良好的控制效果。若應用現代控制理論中的自適應控制、最優控制、解耦控制、預測控制等控制手段，則需要建立被控對象的數學模型，而且往往控制系統的計算量大、實時性差。這些缺點使其很難滿足實際生產過程的需要從而極大地限制了其在現代電站中的應用。 -
Because of the randomness, the periodicity and the impact property of load changes, the short - range electric load forecasting accuracy is related to the pre - processing of original data, the load forecasting model, the sudden change of climate etc. without an appropriate mathematical model, it is difficult to meet the demand of farecasting accuracy by using computer software
短期電力負荷預報的準確度與原始數據的預處理、負荷特性、預報模型、氣候突變等因素有關，因為負荷變動具有隨機性、周期性和沖擊性的特性，如果不採用恰當的數學模型，利用計算機軟體技術就難以滿足預報準確度要求。 -
Due to the complexity of the load combinations of the gate chamber, it is difficult to perform such test on each load case. on the other hand, it is lack of the test data on the load case perpendicular to the current direction of the gate frusta till now
由於閘室的受力荷載組合較為復雜，對每種工況都做光彈試驗不容易做到，且有關垂直水流方向的閘墩受力狀況的試驗資料迄今尚很缺乏。 -
Annual synthetical cost or power loss, etc. ) with physical constraints, such as load demand, line ' s capacity, substation ' s capacity etc. as we know, it is difficult to get differential function of a nonlinear objective function, so for simplifying the problem, a layered optimal strategy for multi - constrained substation positioning is proposed
變電站站址優化是在滿足諸如負荷需求、線路容量、變電站容量等約束的情況下，尋優新建變電站的位置坐標，使某目標值（例如，年綜合計算費用、線損等）達到最優。 -
Load test is difficult to be carried with the development of higher bearing capacity and long length. as a new measuring technology, self - balanced method has its advantage on technology and economy. at present it is first load test method in north american and it has been applied in some province in china
作為一種新興的單樁承載力測試技術? ?自平衡試樁法，其測試技術的優越性及其在經濟上的巨大潛力，目前在北美已被公認為是進行基樁靜荷載試驗的首選方法，在我國的北京、江蘇、甘肅的等地區也已經開始小范圍地試用。 -
But it is difficult to define the heat load in advance
問題是，其中的用戶熱負荷與諸多因素有關，難以預先確定。
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