The background survey and tracking survey of artificial reef area in Chenghai Laiwu were carried out before and after reefing in 2003 and 2007, respectively. The results indicated that after the deployment of artificial reefs, the biomass density of fishery resources increased by 25.63 times, which were much higher than before. The resources species was much more abundant; total number increased from 23 to 41, which increased by 0.78 times. The crab resources sharply increased by 1.75 times after artificial reef were deployed. Harpodon nehereus and Portunus sanguinolentus , which did not appeared in background survey, now became the dominant species in tracking survey. There were high diversity indexes in artificial reefs area and control area in tracking survey. In conclusion, the results indicated that the fish-aggregating effect of artificial reef site has improved a lot, and the community structure and the habitat environment have been significantly improved.

摘 要：2003和2007年分別對澄海萊蕪人工魚礁區(qū)進(jìn)行了投礁前的本底調(diào)查和投礁后的跟蹤調(diào)查国模大胆私拍啪啪AV，結(jié)果表明日本3级黄色视频，投礁后礁區(qū)海域游泳生物的資源密度明顯比投礁前高国产精品一区午夜福利，增加了25.63倍国产老师色；礁區(qū)海域各類資源種類均比投礁前豐富一道本无码A√，總種數(shù)由投礁前的23種增加至41種九一国产精品网站，比投礁前增加了0.78倍，其中99久久一级做a爱全免费，蟹類種數(shù)增加最多亚洲伊人天堂视频，增加了1.75倍；在本底調(diào)查中沒有出現(xiàn)的經(jīng)濟(jì)種類龍頭魚 Harpodon nehereus 和紅星梭子蟹 Portunus sanguinolentus 在跟蹤調(diào)查中已成為主要優(yōu)勢種亚洲欧美激情小说视频；Shannon-Wienver多樣性指數(shù)在礁區(qū)和對比區(qū)均比投礁前有所增加性交AAAAA片在线看。

The control system of NC drilling machine which takes the PLC as the main controller is used in drilling machine. It controls the aiguille moving from one positioning to another positioning relative to the positioning of the workpiece. The system consists of PLC, stepper motor driver, stepper motor, HMI, and so on.

摘 要：數(shù)控鉆孔機(jī)控制系統(tǒng)是用在孔加工機(jī)床上，以可編程序控制器為主控制器午夜亚洲视频，控制鉆頭相對于工件的定位欧美日韩福利视频一区，由一個(gè)定位點(diǎn)向另一個(gè)定位點(diǎn)的控制系統(tǒng)。

Direct air cooled condenser is composed of individual direct air cooled units.

摘 要：直接空冷凝汽器由一個(gè)個(gè)直接空冷單元組成欧美视频在线观看熟。

The androecium were consisted of 3 stamens,two of which were connate ,separating or partial combination.

摘 要 對南瓜的兩性花進(jìn)行外部形態(tài)及結(jié)構(gòu)的研究欧美久久黄色网站，結(jié)果表明：南瓜的兩性花可有子房上位花、子房半下位花和子房下位花三種類型：花萼特黄牲交免费视频、花冠均為5欧美老妇大乳大屁股操逼视频，合瓣；雄蕊3色网站在线播放，其中有兩枚各由兩個(gè)雄蕊合生而成超碰在线88二区，分離和部分聯(lián)合，花藥結(jié)構(gòu)特殊免费九色视频日本在线，花粉發(fā)育正常日屄视频自拍特写；雌蕊具有單個(gè)或兩個(gè)柱頭及花柱。

Electroless Co-Ni-P thin film as-deposited was amorphous possessing smooth surface. The film was crystallized after heat treatment at 300℃ for 1 hour, and the surface of film was composed of "taper humps". When the film was heated, phase of Co2P deposited from the solid solution and allotropic transformation took place from hexagonal close-packed system to face-centred cubic lattice.

摘 要：化學(xué)鍍Co-Ni-P薄膜鍍態(tài)下為非晶態(tài)結(jié)構(gòu)日韩美女福利禁止观看网站视频，表面較為平整www在线MM视频网站；經(jīng)300℃×1h熱處理，發(fā)生了晶化轉(zhuǎn)變免费毛片视频网站，表面由"圓錐峰"所構(gòu)成欧美黄色视频免费播放；隨加熱溫度的提高A片欧美日韩一区二区高清，鍍層析出了Co2P相，并發(fā)生了由密排六方結(jié)構(gòu)的α-Co向面心立方結(jié)構(gòu)的β-Co的同素異構(gòu)轉(zhuǎn)變又黄又爽又免费又猛视频。

Next the MCU control the interface circuit of telephone to accomplish simulated off-hook, then auto-dial by dial-up circuit of DTMF, and play the phonetic information which has been recorded beforehand by phonetic circuit, to tell the user of the emergency which has occurred so that they can take corresponding step on time.

當(dāng)紅外探測器檢測到警情的時(shí)候www.色色色.Ccom，就會(huì)向單片機(jī)發(fā)出中斷請求，再由單片機(jī)控制電話接口電路男女猛烈无遮挡免费动态图，實(shí)現(xiàn)模擬摘機(jī)黄页网站免费观看的视频，通過 DTMF 撥號電路實(shí)現(xiàn)自動(dòng)撥號，并由語音電路通過電話完成播放預(yù)先錄制好的語音信息欧美肥胖老太性交，實(shí)現(xiàn)語音報(bào)警天天插天天狠，來通知用戶發(fā)生警情，以便讓他們及時(shí)的做出相應(yīng)措施欧美亚洲国产精品v视界久久高清。

The spore germination and gametophyte development of 21 ferns are studied. It indicates that :① the development period of prothallium and young sporophyte of the same species is different due to seeding time of spores;② the optimal temperatures of spores germination and gametophyte development of 21 ferns are about 15 -24 ℃;③ the rate of spore germination of rare ferns is much lower than the ferns which occur large populations in nature;④ the treatment with GA 3 can accelerate the germination of the spores;⑤ the prothallium changes from large to small, green to yellow when young sporophyte comes out. The prothalliums of all 21 ferns die away after the appear of the 3rd leaf of sporophytes;⑥ shapes of the 1st and 2nd leaves of the young sporophyte are different from those emerged later;⑦ spores cultured in dark can not germinate;⑧ a prothallium can develop only one young sporophyte though it has many archegoniums, and the spore propagation with leaf mould substrate is an economical method.

摘 要：以腐葉土為培養(yǎng)基質(zhì)日韩黄色免费网站，對 21 種蕨類植物進(jìn)行了孢子萌發(fā)和原葉體發(fā)育的研究，結(jié)果表明：①不同時(shí)期播種的同種蕨類的孢子欧美精品A片区，發(fā)育出原葉體和幼孢子體所歷經(jīng)的時(shí)間長短不同A片一级做二级做免费看吧；②孢子萌發(fā)和配子體生長發(fā)育的適宜溫度約為 15 ～ 24 ℃；③稀有蕨類的孢子萌發(fā)率低欧美黑人性暴力掹交，而在野外能形成較大種群的蕨類的孢子萌發(fā)率高国产精品呦交在线观看；④用 GA 3 處理孢子可以促進(jìn)萌發(fā)；⑤當(dāng)原葉體上長出幼孢子體時(shí)8x8ⅹ海外永久免费视频女王，原葉體由大變小婷婷四色六月，由綠變黃， 21 種蕨類的原葉體都在幼孢子體上長出第 3 片葉時(shí)消失久久久久久久久久久久久久；⑥幼孢子體上長出的第 1 东莞36项服务培训、 2 片葉在形態(tài)上與以后長出的葉不同；⑦孢子萌發(fā)需要光爱爱视频一区；⑧ 1 片原葉體盡管有多個(gè)頸卵器timi11.com，但僅發(fā)育出 1 株幼孢子體；⑨利用腐葉土進(jìn)行蕨類孢子繁殖是一種經(jīng)濟(jì)實(shí)用的繁殖方法日韩欧洲妓女网。

Electroless Co-Ni-P thin film as-deposited was amorphous possessing smooth surface. The film was crystallized after heat treatment at 300℃ for 1 hour, and the surface of film was composed of "taper humps". When the film was heated, phase of Co2P deposited from the solid solution and allotropic transformation took place from hexagonal close-packed system to face-centred cubic lattice.

摘 要：化學(xué)鍍Co-Ni-P薄膜鍍態(tài)下為非晶態(tài)結(jié)構(gòu)国产美女精选视频，表面較為平整；經(jīng)300℃×1h熱處理国产黄A片在线观看永久免费，發(fā)生了晶化轉(zhuǎn)變男女无遮挡羞羞视频免费软件，表面由&圓錐峰&所構(gòu)成；隨加熱溫度的提高你懂得在线，鍍層析出了Co2P相，并發(fā)生了由密排六方結(jié)構(gòu)的α-Co向面心立方結(jié)構(gòu)的β-Co的同素異構(gòu)轉(zhuǎn)變国产丝袜Av在线。

The self-propelled "TPC" rice combine harvester "4ZTL-1800" Invented by Professor Jiang Yiyuan (Academician of Chinese Academy Engineering) performed well in immediately cutting and windrowing the straw after stripping in front of the crawler.

由蔣亦元教授發(fā)明的4ZTL-1800型自走式割前摘脫稻聯(lián)合收獲機(jī)可以實(shí)現(xiàn)對谷物割前摘脫的同時(shí)將脫粒后的秸稈在被行走裝置壓倒之前進(jìn)行切割并摟集成條鋪午夜理论影院第九电影院。

Methods 37patients with complicated dentition defect that can't use traditional removable partial denture were involved in the study.

選擇37例因傳統(tǒng)可摘局部義齒無法戴用或?qū)Υ祟愋迯?fù)體效果不滿意的復(fù)雜牙列缺損患者www.av网址大全，附著體義齒修復(fù)前首先請患者對現(xiàn)有可摘局部義齒就咀嚼功能恢復(fù)、舒適度欧洲一级AA片片免费观看、發(fā)音與美觀3個(gè)主觀項(xiàng)目進(jìn)行評價(jià)开操网站，其次由修復(fù)科醫(yī)師對義齒的固位情況、對基牙的影響欧美大胆a国产真实乱子伦级、對口腔衛(wèi)生的影響3項(xiàng)客觀指標(biāo)進(jìn)行評價(jià)男人扎爽进女人j免费网站视频，并在附著體義齒修復(fù)后1～5年再對上述6項(xiàng)指標(biāo)進(jìn)行評價(jià)。