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first water (特指鉆石、珍珠等)最好品質,最純潔的光澤,優等。

first-aid

This paper analyzes the factors affecting the controlling precision of sand compactibility system and sets up the dynamic model of regression coefficient between sand compactibility and water content . to prevent the insufficiency or excess of sand water content , the amount of the first addition is set as 80 % of the total water addition amount . after the first water addition , we adopt ar model to predict the stable value of sand compactibility to shorten the time mixing the sand . each time we add water , the correction coefficient is introduced to adapt to the change in the composition of sand . the experiment shows that the mathematics model not only makes the water content in sand reach the best range within shorter time , but also directs how the sand composition should be adjusted , which can better conform to the actual situation 分析了影響型砂緊實率控制精度的因素,建立了型砂緊實率-水分回歸系數的動態模型.為防止型砂水分不足或過量,將第一次加水量設定為總加水量的80 .第一次加水后,對型砂緊實率穩定值采用ar模型進行預測,以縮短型砂混制時間.每次加水后,引入修正系數,以適應型砂組成的變化.實驗表明,該數學模型不僅使型砂水分含量在較短時間內達到最佳范圍,同時可指示對型砂組成進行調整,能較好地符合實際情況

As golfing tourists drive down freshly watered green fairways this summer , while the rest of spain endures a devastating drought , a crusading eco - golfer has opened the country ' s first water - free course 在西班牙,當你在剛剛澆過水的滿眼翠綠的高爾夫球場上頻頻揮桿時,你可能會想到該國其它地方正在經受著嚴重的干旱。為此,西班牙一位狂熱的環保高爾夫愛好者最近設計出了該國首座幾乎不用澆水的新型環保高爾夫球場。

This 900 - year - old water village is believed to be the first water town in china and famed for the tiny waterways that run under small bridges through neighborhoods of sober stone and brick houses 元代中期,沈萬三用周莊鎮北白蜆江水運之便,通番貿易,周莊因此成為糧食、絲綢、陶瓷、手工藝品的集散地,遂為江南巨鎮。

Paco l pez , a sports lecturer at a madrid university as well as a crusading eco - golfer , has opened the country ' s first water - free course 帕科?洛佩斯是馬德里一所大學的體育講師,也是一位狂熱的環保高爾夫愛好者.最近他設計出了西班牙首座幾乎不用澆水的高爾夫球場

The over 100 years old “ red brick building “ , which was the first water pumping station in the kowloon peninsula , preserved in the waterloo road yunnan lane project 位于窩打老道云南里重建計劃范圍內歷史逾百載的紅磚屋前身為九半島首個泵水站獲得保存

She is definitely a cook of the first water 她真是第一流的廚師。

This young man had all the inclination to be a profligate of the first water . 這個青年完全有可能成為十足的浪子。