Factory remaining hot water, remaining vapor and boiler heating system, were adopted in tilapia overwintering. Every step, such as site selection, pond and fish preparation, cultivation of fish, fish selection, timing of overwintering, stocking density and managements during overwintering, was compared among three systems. The results of data analysis showed that the survival rate in remaining hot water system was 12% higher than in remaining vapor system and 21.25% higher than in boiler heating system. The overwintering cost in remaining hot water system was 735 Yuan/m~3, which was 18 Yuan lower than in remaining vapor system and 71.4 Yuan lower than in boiler heating system. The profit in remaining hot water system was 201 Yuan/m~3, which was 162 Yuan higher than in remaining vapor system and 275.4 Yuan higher than in boiler heating system.

本論文采取了余熱水、余熱氣亚洲免费观看下载视频、鍋爐加溫三種方式對(duì)進(jìn)行羅非魚(yú)越冬保種中文字幕第10页，從地點(diǎn)選擇、越冬池麻豆久久精品国产99国产、魚(yú)的準(zhǔn)備、越冬苗種的培育91无码在线视屏观看视频、越冬前催肥日本视频www免费试看、越冬魚(yú)的選留、越冬魚(yú)進(jìn)池時(shí)間和密度日本三级香港三级人妇视频、越冬期間飼養(yǎng)管理等環(huán)節(jié)進(jìn)行對(duì)比試驗(yàn)獲得了三種方式的試驗(yàn)數(shù)據(jù)并進(jìn)行了分析討論www.26uuuu，結(jié)果顯示：余熱水越冬雌親魚(yú)的成活率比余熱氣越冬高出12％、比鍋爐加溫越冬高出21.25％色玖二代；余熱水越冬雌親魚(yú)的成本每立方米為735元比余熱氣越冬的成本每立方米低18元国产在线精品26uuu、比鍋爐加溫越冬的成本每立方米低71.4元；余熱水越冬雌親魚(yú)的利潤(rùn)每立方米為201元比余熱氣越冬的利潤(rùn)每立方米高162元无码秒播成人影视网站大全、比鍋爐加溫越冬的利潤(rùn)每立方米高275.4元噜噜熟女导航。

With analysis of the influencing factors of traffic mode choice in economic circle, this paper developed a modal split Nested-Logit model including three indices as trip cost, travel time, and adaptability.

在分析經(jīng)濟(jì)圈交通方式選擇影響因素的基礎(chǔ)上，利用出行費(fèi)用18禁美女裸露网站入口、出行時(shí)間和舒適性等指標(biāo)作為廣義費(fèi)用函數(shù)的主要構(gòu)成屬性狼友干在线观看，建立了基于Nested-Logit模型的經(jīng)濟(jì)圈交通方式劃分方法。

Taking the rapid transit from Tianjin to Binhai New Area for example, this article gives a description of the preliminary design, construction organization and budget estimate making for the track-laying on viaducts, and makes a comparison with the actual field construction to explore the construction organization of slab track of the rail transit system and performs a cost analysis thereof.

以天津市區(qū)至濱海新區(qū)快速軌道交通工程為例又粗又长视频，闡述高架橋梁鋪軌初步設(shè)計(jì)施工組織及概算編制国产一级精品A片免费观看，并與實(shí)際施工對(duì)比，探討城市軌道交通工程無(wú)碴軌道施工組織及費(fèi)用分析无码一区网站。

By means of analysis of microstructure and measuring of impact toughness and hardness,and verification by real manufacture and application,the Si-Mn steel with rare earth and boron complex modification is better than traditional high Mn steel to produce tractor track guard in the wide range of temperature and the low cost and long life.

通過(guò)微觀組織分析在线麻豆视频、沖擊韌度、硬度等力學(xué)性能的測(cè)定精品激情、實(shí)際生產(chǎn)和裝車(chē)試驗(yàn)證實(shí)国产91大屁股熟女，采用稀土-硼復(fù)合變質(zhì)的SiMn鋼代替?zhèn)鹘y(tǒng)高錳鋼生產(chǎn)拖拉機(jī)履帶板，不僅使用溫度范圍廣，而且成本低欧美性XXXX极品HD欧美风情，壽命高久久国产99，具有明顯的經(jīng)濟(jì)效益和社會(huì)效益。

FEA is an efficient design tool in modern engineering design. The widely application of finite element analysis and structural optimization can shorten the period of production development, reduce the cost of production manufacture and improve the quality and reliability of the product.

有限元結(jié)構(gòu)分析是現(xiàn)代工程設(shè)計(jì)的一種快捷大型黄片、有效的輔助工具国产老妇女拍拍拍，基于有限元方法的結(jié)構(gòu)分析和優(yōu)化技術(shù)的廣泛應(yīng)用，能夠有效降低產(chǎn)品的開(kāi)發(fā)成本日韩午夜在线网站视频播放免费，縮短產(chǎn)品的研制周期黄色视频片在线视频，提高產(chǎn)品的質(zhì)量和可靠性。

Exploring a new technology for snow-melting and deicing of airports tracks is the research background of this project. Through a great amount of experiments, numerical value calculation and theory analysis, a great deal of experiment data are attained, and the resonance law of carbon-fiber reinforced concrete under various power and ice-layer thickness conditions was found.A low-energy concuming, low cost and high thermal effect CFRC road surface concrete structurel material was developed. The snow-melting and deicing mechanism of CFRC was analyzed in the point of view of energy conservation, and the electric-thermal resonance law of road surface structural materials to CFRC concrete materials was set up.

本項(xiàng)目以新型機(jī)場(chǎng)跑道的冬季融雪化冰為研究背景黄色片在线视频，通過(guò)大量實(shí)驗(yàn)精品国产99国产精品嫩草影院、數(shù)值計(jì)算與理論分析，獲得了碳纖維增強(qiáng)機(jī)敏混凝土在不同功率日韩欧美视频在线看、不同冰層厚度下的響應(yīng)規(guī)律和大量試驗(yàn)數(shù)據(jù)国产A级理论片无码免费，找到了一種能耗低、熱效高久久偷拍综合、成本低的CFRC路面混凝土結(jié)構(gòu)材料亚洲图片澳洲图片在线看，并從能量守恒的角度分析了CFRC混凝土融雪化冰機(jī)理，建立了研究路面結(jié)構(gòu)材料的導(dǎo)熱性能對(duì)CRFC混凝土材料的電熱響應(yīng)規(guī)律www.rrr755.com。

WE think we should take NDIR to analysis the gas because it will be small-size, high-capability with lower cost.

我認(rèn)為我們應(yīng)該用無(wú)彌散紅外線來(lái)分析氣體扒开美女双腿桶出白浆。因?yàn)檫@種方法規(guī)模小，性能高五级黄色毛片，成本低韩日妇女打一炮。

For continuous queries,a filter-based approach f-kNN and a clustering-based approach c-kNN are proposed,f-kNN significantly reduces the cost by setting filter for each node in the networks,c-kNN takes advantage of the spatial-temporal property of WSNs that the data sensed in two consecutive rounds and nearby nodes will not deviate too much,and utilizes clustering analysis to find the data storage nodes.

針對(duì)快照型kNN查詢，提出了一種值空間映射方法h-kNN美女a片网站，其利用值關(guān)系保持的哈希函數(shù)一级A片破外女，將值相近的數(shù)據(jù)存儲(chǔ)在相同或相鄰的節(jié)點(diǎn)，以便查詢時(shí)對(duì)查詢值也采用同樣映射后在小范圍內(nèi)搜尋即可獲得結(jié)果AA黄色视频在线观看。

The study shows that the average daily cost of insured patients is less than that of self-paying patients, but the admission days and the average expense of insured patients is more than that of self-paying patients. The results of multi-regression analysis of expense show that the main influencing factors are admission days, drugs proportion and surgery.

研究顯示醫(yī)惫患痘粕獳片,色欲；颊叩娜站M(fèi)用低于自費(fèi)患者，住院天數(shù)人人与曰人人操、次均住院費(fèi)用高于后者亚洲欧美一区二区禁止18；多重逐步回歸分析的結(jié)果顯示住院天數(shù)、藥費(fèi)比例日韩美乳中文无码AV、手術(shù)與否等因素是影響次均住院費(fèi)用的主要因素国产蜜臀av在线。

Detailed analysis shows that juristicact nullity system developed from the self-generating habits in the course of ages ofeconomic need for diminishing transaction.Psychological need for transactionsafety and economic need of diminishing transaction cost calls for co-operationgaming between parties,soliciting the self-benefit behavior in transaction not todamage other parties'interest,which is conductive to harmonized egotistic withaltruistic under transactional parties'self-constraint,as well to harmonized individualinterest with social interest.

分析表明：法律行為無(wú)效制度是人類(lèi)長(zhǎng)期經(jīng)濟(jì)交往中自發(fā)形成的慣例的延伸，交易安全的心理需要和降低交易成本的經(jīng)濟(jì)需求亚洲美女黄又黄免费观看网站视频，在當(dāng)事人之間產(chǎn)生合作博弈国产一级片免费手机在线视频，促使交易當(dāng)事人在從事&利己&行為不要損害他人亚洲黄色视频xxxx黄，客觀效果上使&利己&行為與&利他&行為在交易當(dāng)事人的自我約束中的得到統(tǒng)一，個(gè)人利益和社會(huì)利益得到協(xié)調(diào)一致老妇女网站。