To oversee all the details yourself in person ; to be at once pilot and captain, and owner and underwriter ; to buy and sell and keep the accounts ; to read every letter received, and write or read every letter sent ; to superintend the discharge of imports night and day ; to be upon many parts of the coast almost at the same time ? often the richest freight will be discharged upon a jersey shore ; ? to be your own telegraph, unweariedly sweeping the horizon, speaking all passing vessels bound coastwise ; to keep up a steady despatch of commodities, for the supply of such a distant and exorbitant market ; to keep yourself informed of the state of the markets, prospects of war and peace everywhere, and anticipate the tendencies of trade and civilization ? taking advantage of the results of all exploring expeditions, using new passages and all improvements in navigation ; ? charts to be studied, the position of reefs and new lights and buoys to be ascertained, and ever, and ever, the logarithmic tables to be corrected, for by the error of some calculator the vessel often splits upon a rock that should have reached a friendly pier ? there is the untold fate of la prouse ; ? universal science to be kept pace with, studying the lives of all great discoverers and navigators, great adventurers and merchants, from hanno and the phoenicians down to our day ; in fine, account of stock to be taken from time to time, to know how you stand
親自照顧一切大小事務；兼任領航員與船長，業主與保險商；買進賣出又記賬；收到的信件每封都讀過，發出的信件每封都親自撰寫或審閱；日夜監督進口貨的卸
落；幾乎在海岸上的許多地方，你都同時出現了似的； ? ?那裝貨最多的船總是在澤西岸上卸
落的； ? ?自己還兼電報員，不知疲倦地發通訊到遠方去，和所有馳向海岸的船隻聯絡；穩當地售出貨物，供給遠方的一個無饜足的市場，既要熟悉行情，你還要明了各處的戰爭與和平的情況，預測貿易和文明的趨向； ? ?利用所有探險的成果，走最新的航道，利用一切航海技術上的進步； ? ?再要研究海圖，確定珊瑚礁和新的燈塔、浮標的位置，而航海圖表是永遠地改而又改，因為著計算上有了一點錯誤，船隻會
沖撞在一塊巖石上而至於粉碎的，不然它早該到達了一個友好的碼頭了? ? ，此外，還有拉?貝魯斯的未知的命運； ? ?還得步步跟上字宙科學，要研究一切偉大的發現者、航海家、探險家和商人，從迦探險家飯能和腓尼基人直到現在所有這些人的一生，最後，時刻要記錄棧房中的貨物，你才知道自己處于什麼位置上。
There are five genetic classifications of tidal creeks as follows : tidal creek scoured by the currents of ebb tide ; tidal creek eroded by stream from land ; tidal creek scoured by conflux of rainwater ; new tidal creek formed when the old moving ; tidal creek scoured by the flood
在形成上共分為四種成因類型，即
落潮水流
沖刷型、陸源水流侵蝕型、雨水匯流型、潮溝遷移殘留型和潮流輻聚侵蝕型。
Agency for international development andrew natsios, just back from a visit to sudan including darfur, said pent - up rage among the region ' s displaced people had reached hitherto - unseen levels, and could flare into ethnic and tribal violence extending beyond darfur to major cities like khartoum and omdurman
他說，那裡被迫逃離家園的人們所積壓的憤怒達到了前所未有的水平，有可能演變為民族和部
落沖突，並擴散到達爾富爾地區以外的大城市，如首都喀土穆和恩圖曼。
The result shows that under the effect of repeated impact load, the stress wave produces reflection in the metallurgical junction plane between coating and basal body, and forms stretch wave causing longitudinal split and angle split of coat ; the microcosmic spot pitting and deep layered peeling off occur in coating surface due to stress concentration ; the energy accumulation of impact loading causes rigidity variation and plastic deformation
結果表明：在多
沖載荷作用下，應力波在塗層和基體的冶金接合面發生反射，形成拉伸波造成塗層的縱裂和角裂；在塗層表面由於應力集中，塗層表面發生微觀點蝕和深層剝
落；
沖擊載荷能量的積累，造成塗層試樣硬度變化和塑性變形。
The design principle of small type drop - test shock machine
小型跌
落沖擊臺的設計原理
Based on the dropping impact dynamics characteristic under non damage condition, a non - linear viscoelastic model was develop to describe of pear the rheological characteristic
摘要基於梨果實非損傷條件下的跌
落沖擊動力學特徵，採用非線性黏彈性本構模型表徵其流變特性。
From the point of view of viscoelasticity, dynamic responses of pcb under drop impact were calculated based on plate theory
從黏彈性角度，基於板模型計算電路板在跌
落沖擊作用下的動力學響應。
In the present experiment studies, an acute traumatic model of lateral cortical impact was employed to study expressive changes of microtubule associated protein - 2 ( map - 2 ), cyclooxygenase - 2 ( cox - 2 ), glial cell line - derived neurotrophic factor ( gdnf ), caspase - 3 mrna and protein after brain injury in rats. immunocytochemical staining, western blotting, nucleic acid in situ hybridization with an oligonucleotide probe and computer image analysis were used to detect the dynamic changes of map - 2 mrna, cox - 2 mrna, gdnf mrna, and caspase - 3 mrna in the cortex after moderate traumatic brain injury ( tbi )
本實驗從自行設計大鼠腦損傷
落體打擊器開始，先行建立了一個便於觀察和施加處理因素、控制性好、重復性好的動物模型，選用30g擊錘從25cm高處下
落，
沖擊應力d為355 . 09kpa ，打擊大鼠右頂部，造成中等程度的閉合性腦損傷，從病理形態學、組織超微結構觀察及微管相關蛋白- 2 （ microtubuleassociatedprotein2 ， map - 2 ） 、環氧合酶- 2 （ cyclooxygenase2 ， cox - 2 ） 、膠質源性神經營養因子（ glialcellline - derivedneutrophicfactor ， gdnf ） 、 caspase - 3基因及蛋白表達的時間性變化，詳盡系統地闡述腦損傷后各指標變化的時間規律性及表達差異可能的形成機制。
Effects of hard - nonlinear cushion for drop shock machine to simulation of half - sine waveform
跌
落沖擊機墊層的硬非線性對半正弦波模擬的影響
A chip - level channel estimation technique with varing step size is brought forward to improve the performance of rake receiver for wcdma downlink. for the first place, the effects of different channel parameters for wcdma downlink channel estimation are analyzed
通道估計是rake接收機的關鍵技術，其目的是獲得不同多徑通道的參數估計值，估計出移動通道的衰
落沖激響應，能夠提高rake接收的性能。
Dynamic properties of printed circuit board assembly under drop impact were investigated when viscoelastic property of substrate materials was considered
摘要從黏彈性角度研究電路板組件跌
落沖擊作用下的動力學特性。
Research on the dropping shock response of linear system
線性系統的跌
落沖擊解研究
Research on the dropping shock response of the key parts
關鍵部件跌
落沖擊響應研究
The model was composed of one non - linear spring and one non - linear viscous damper
依據跌
落沖擊未損傷時的試驗結果，進行模型參數識別。
This article introduces a new kind of invention, which is capable of monitoring the intensity of the impact and vibration in circulation phase, discusses its fundamental principle and structure, analyses the results of the impact experiment and gains the corresponding monitoring parameters of different specification products
摘要介紹了新開發的一種流通環節
沖擊和振動烈度監控新產品，論述了基本原理和結構，分析了跌
落沖擊標定實驗結果，獲得了可用於不同易損度商品的加速度監控參數。
Force of 355. 09kpa was produced by a 30g weight dropped from 25cm height
本實驗選用叨擊錘從25cm高處下落，沖擊應力d為355
