usefulness 中文意思是什麼
音標 ['ju:sfʊlnis]
usefulness
解釋
有用的-
Usefulness includes the fact the negatives have been calibrated.
所謂有用，是指在底片上要有標度。 -
Thus the arab umayyed dynasty of caliphs, which had moved the capital from medine to damascus in 661, came to be regarded with much justification as a parasitic clique that had outlived its usefulness once the conquests were completed
人們開始理由充分地認為，阿拉伯伍麥葉里發王朝是征服戰爭完成後毫無作用的一個寄生集團；伍麥葉王朝曾於661年從麥地那遷都大馬士革。 -
Rigging and fitting my mast and sails ; for i finish d them very compleat, making a small stay, and a sail, or foresail to it, to assist, if we should turn to windward ; and which was more than all, i fix d a rudder to the stern of her, to steer with ; and though i was but a bungling shipwright, yet as i knew the usefulness, and even necessity of such a thing, i apply d my self with so much pains to do it, that at last i brought it to pass ; though considering the many dull contrivances i had for it that sail d, i think it cost me almost as much labour as making the boat
他當然是個劃船的好手，可是對使用帆和舵卻一竅不通。他見我用手掌舵，駕著小舟在海上往來自如，又見那船帆隨著船行方向的變化，一會兒這邊灌滿了風，一會兒那邊灌滿了風，不禁大為驚訝-簡直驚訝得有點發呆了。可是，不久我就教會了他使用舵和帆，很快他就能熟練駕駛，成了一個出色的水手。 -
But whatever its short - term usefulness for clamping down on inflation, monetarism proved an unreliable lodestar for steering the economy
但無論貨幣主義對降低通貨膨脹在短期內是多麼有效，它並不是掌控經濟的可靠原則。 -
To be disposed of once we ' d outlived our usefulness
對你來說不過是可以拋棄的戰略盟友 -
When he retired he felt that he had outlived his usefulness
他退休后覺得自己年老無用了。 -
As the crucial part of palmprint recognition, this paper mainly focuses on the ideas and usefulness and implementation of these two feature extraction algorithms
作為掌紋識別的關鍵部分，本文著重闡述兩種特徵提取演算法的思想、作用和實現過程。 -
After donating several dogs to policemen, their usefulness as police dogs was demonstrated
在上校向警方捐贈了幾只德牧；警方試用后，德牧作為警犬的能力得到證實。 -
A bank's decision must be based upon the relevance and usefulness of promotional campaigns.
銀行決策必須取決于促銷活動是否有的放矢和效果如何。 -
Deliberate radiation or reradiation of electromagnetic waves so as to impair the usefulness of a specific segment of the radio spectrum that is being used by the enemy for communication or radar
人為地輻射或反向輻射電磁波，使一段特定的無線電波譜的可用性削弱，而這一波譜段是由敵人的通訊或雷達所使用。 -
And when jarvis lorry saw the kindled eyes, the resolute face, the calm strong look and bearing of the man whose life always seemed to him to have been stopped, like a clock, for so many years, and then set going again with an energy which had lain dormant during the cessation of its usefulness, he believed
這就是曼內特醫生此時的情況。羅瑞看到了他那燃燒的目光堅定的面容沉著有力的表情和態度。當他心目中醫生過去的生活似乎永遠像一座多年停擺的時鐘，可現在他確信他又以被廢棄后所積蓄的沉睡的精力嗒嗒地走了起來。 -
The army finally recognized the usefulness of german shepherd dogs during the first world war
（特別是德國）軍方在第一次世界大戰期間認可了德牧的功用。 -
There are always been some skepticism about the usefulness of subsidies on fertilizers.
一直有人對化肥補貼的效用持某種懷疑態度。 -
I was tired but unrepentant and didn't seem able to force myself into a practical posture of usefulness and obedience.
我很疲倦，卻毫不悔悟，不肯強迫自己作出一種服服貼貼，有益而實事求是的姿態。 -
There will also be an avalanche of further information, in written and numeric form, that is largely unsubstantiated and therefore lacking in usefulness
再者，許多內容未經證實，因而沒有價值的資訊也會以文字及數字的形式大量涌現。 -
Usefulness of enhanced ct scanning in the diangnosis of cerebral astrocytoma
增強掃描對腦星形細胞瘤的診斷價值 -
We also show the usefulness and versatility of chest ultrasound when dealing with unfavorable patient conditions
我們也顯示胸腔超音波檢查在病人情況不佳時的實用性與靈活性。 -
The usefulness of chaos in cryptography depends on the natural relationship between the two research areas : strong dynamical properties of chaotic systems imply strong cryptographical properties of cryptosystems, and the basic way to design cryptosystems containing good strong cryptographical properties implies quasi - chaos
這一想法來自於混沌理論和傳統密碼學之間的自然聯系:一個強的混沌系統的動力學特性大致對應著高強度密碼系統的某些安全特徵，而具有良好混合性的傳統密碼系統又暗示著擬混沌現象。 -
From the legitimacy, usefulness, convenient of maritime affairs administration supervisor organization ' s investigation and handle maritime affair, analyze the gains and losses of maritime affairs administration supervisor organization and maritime court handle the civil case dispute from maritime affair, describle the necessity of maritime affairs administration supervisor organization working talent exsitting
通過圍繞海事行政主管機關調查處理海事的合法性、有效性、便捷性，分析海事行政主管機關和海事法院解決海事所引起的民事糾紛案件的利弊，闡述了這一行政職能存在的必要性。 -
The article takes a 600mw natural cycle drum boiler ( soot blow using steam ) as investigating object, establishes soot accumulation loss and soot blowing energy loss models for its water cooling wall, superheater, economizer and air preheater respectively, set up instructions for soot blower operating. simulating calculation results are compared with site data to verify usefulness of key models. the article introduced the operation optimizing design of soot blowers of yanzhou no2 power plant based on theoretical research
本文以600mw汽包自然循環鍋爐（蒸汽吹灰）為具體分析對象，分別建立其水冷壁、過熱器、省煤器、空預器的積灰損失和各受熱面吹灰能量損失的模型，建立相應的吹灰器運行規則指導，對設計中的關鍵模型問題，通過模擬計算及與現場數據作比較的方法，驗證其可用程度。
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