例句與造句

1. Abstract : the raining time , process , area and density of the storm resulting in the nenjiang flood in august 1988 and its recurrence period were analyzed . the disaster data of the flood was also presented
   文摘:論述了形成1988年8月嫩江大洪水的降雨發(fā)生時間及過程、雨區(qū)范圍、降雨強度，分析了該次洪水的峰、量組成情況及稀遇程度，匯集了災(zāi)情損失數(shù)據(jù)。
2. Taking a specialized port in eastern guangdong as an example this paper puts forward the layout pattern and design standard of breakwater , i . e . , determining the sectional dimensions of the breakwater according to wave factors of 2 years ' recurrence period , which not only ensures favorable berthing condition in port , but also control effectively the engineering cost
   摘要以粵東地區(qū)某專用港為例，對防波堤的布置形式及設(shè)計標(biāo)準(zhǔn)提出按2年一遇波要素確定防波堤斷面尺寸，在保持港內(nèi)有較好的泊穩(wěn)條件的同時，可以有效控制工程投資。
3. It's difficult to find recurrence period in a sentence. 用recurrence period造句挺難的