The central nerve system of the Penacus orientalis: Two pairs of ganglia, which belong to the anterior part of the head, form the brain of the animal.

東方對(duì)蝦的腹神經(jīng)鏈共有十一對(duì)神經(jīng)節(jié)欧美美女在线看，其中除第五對(duì)由兩對(duì)神經(jīng)節(jié)合并組成并發(fā)出兩對(duì)附肢神經(jīng)外，余者各自發(fā)出一對(duì)附肢神經(jīng)尤物在线草草一区二区。

The curve form of the terminal segment of the first pleopod of the male (or male pleopod 1) diagnose the three subspecies.

y能看的黄色网站福利。 yangtsekiense）分布于長(zhǎng)江下游和淮河流域，其雄性第1腹肢末節(jié)平直来部一级毛片；桐柏亞種

Y. shanxianense. The reconstructed phylogenetic results indicate that Sinopotamon yangtsekiense diverge into two clades: one clade characterized by the straight terminal segment of male pleopod 1, the other one characterized by the terminal segment being curved towards dorso-innerly, i.e. tongbaiense curved slightly and shanxianense curved sharply.

重建的系統(tǒng)發(fā)生結(jié)果顯示自拍灌醉迷j系列在线观看，長(zhǎng)江華溪蟹分化成2個(gè)分支，一支代表雄性第1腹肢末節(jié)呈平直型的指名亞種支全网男人的天堂网站；另一支則代表雄性第1腹肢末節(jié)彎向背內(nèi)方的內(nèi)彎型支色色亚洲视频，包括稍向內(nèi)彎的桐柏亞種和明顯內(nèi)彎的陜縣亞種在內(nèi)。

The results of the analysis to complete 18S rDNA and partial 28S rDNA D 6-7 domain sequences of 30 collembolan species supported the monophyly of Poduromorpha and Symphypleona, Entomobryoidea is not a monophyly, familia Neelidae should be separated from Symphypleona. The situation about the superfamilia of Tomoceroidea and the familia Neelidae need further studies. The results of the further analysis to complete 18S rDNA and nearlly completely 28S sequences of 4 Protura, 6Collembola, 5 Diplura, 5 Insecta, 10 Crustacean, using 1 Myriapoda and 1 Chelicerata as outgroups indicated that Protura, Collembola and Diplura are monophy, respectively, Protura and Diplura have the nearest realationship, they make sister groups with Collembola and all of them assemble with Insecta to make a monophy cluster of Hexapod; The results support the monophy of Pancrusracea, Crustacean is not a monophy cluster and the realationships between them with Hexapod need further reseachers.

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The dorsoventral movement of the tail produces the thrust, and bending of the anterior body in the horizontal plane enables turning maneuvers.

用一個(gè)串聯(lián)的、多關(guān)節(jié)的上下擺動(dòng)機(jī)構(gòu)來實(shí)現(xiàn)背腹式運(yùn)動(dòng)青青青草网在线观看，用左右擺動(dòng)的轉(zhuǎn)彎?rùn)C(jī)構(gòu)和兩自由度運(yùn)動(dòng)的鰭肢機(jī)構(gòu)來實(shí)現(xiàn)機(jī)動(dòng)運(yùn)動(dòng)aa日本在线上观看。

After verification of FEM, 45 species of 15 series are computed. The major parameters including slippage coefficients, pretensions forces, dimensions of angles, arrangement of bolts, connection method among angle, beam web, column flange, and so on are studied. Some important conclusions are drawn.

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After verification of FEM, 45 species of 15 series are computed. The major parameters including slippage coefficients, pretensions forces, dimensions of angles, arrangement of bolts, connection method among angle, beam web, column flange, and so on are studied. Some important conclusions are drawn.At last, Advices for seismic design based on tests and FEM analysis are presented at last. The study is rather comprehensive and systematic, and the conclusions. can be useful for revising design code, guiding design of engineering, and provide good basis for further to study behavior of shear beam-to-column connections.

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abdominal aorta：腹織脈

abdomen 腹 | abdominal aorta 腹織脈 | abdominal appendage 腹肢

abdominal apoplexy：腹率中

abdominal aorta 腹織脈 | abdominal apoplexy 腹率中 | abdominal appendage 腹肢

abdominal appendage：腹肢

abdominal aorta 腹織脈 | abdominal appendage 腹肢 | abdominal cavity 腹腔

chelicera：螯肢

頭胸部有6對(duì)附肢,即一對(duì)螯肢(chelicera)和5對(duì)步足;無觸角. 腹肢7對(duì). 用鰓呼吸. 如鱟等. (3)蛛形綱(Arachnoida)體分頭胸部和腹部. 頭胸部有6對(duì)附肢,即一對(duì)螯肢国产白色爽、一對(duì)腳須(觸肢)(palp=pedipalp)和4對(duì)步足;也無觸角. 腹肢幾乎完全退化.

chelicera：螫肢

頭腦部有6對(duì)附膠,即一對(duì)螫肢(chelicera)和5對(duì)步足;無觸角. 腹肢7對(duì). 用鰓呼吸. 如鯊等. (3)蛛形綱(Arachnoida)體分頭胸部和腹部. 頭胸部有 6對(duì)附肢,即一對(duì)贅肢、一對(duì)腳須(觸肢)(PalP=PediPalP)和4對(duì)步足;也無觸角. 腹肢幾乎完全退化.

pedicel：腹柄

第一腹節(jié)演變成腹柄(pedicel),短而窄,用來與頭胸部連接. 殘存的第十與第十一腹肢則演變?yōu)榧徠?紡績(jī)突)(psinneret). 紡器是本綱動(dòng)物特征性的結(jié)構(gòu),呈指狀,位于腹部腹面后端或中部,通常共3對(duì),分別稱為前黄色网络站久久、中亚洲无码黄色免费小视频、后紡器. 中紡器最小,

pleopod：腹肢

所有磷蝦均有五條游泳的足稱為[[腹肢]](pleopod)或「游泳足」(swimmerets),與一般的淡水龍蝦很相似. 成年的磷蝦大多長(zhǎng)約1至2公分,而一些磷蝦的物種可長(zhǎng)達(dá)6至15公分. 磷蝦可被輕易從其他甲殼亞門動(dòng)物中區(qū)別出來,

pleopod：(甲殼動(dòng)物的)腹肢, 游泳足

buoyancy force 浮力 | pleopod (甲殼動(dòng)物的)腹肢, 游泳足 | potato tube 馬鈴薯塊莖

neuropodium：腹肢

典型的疣足分成背肢(notopodium)和腹肢(neuropodium),背肢的背側(cè)具一指狀的背須(dorsalcirrus),腹肢的腹側(cè)有一腹須(ventral cirrus)(圖8-2),有觸覺功能.

notopodium：背肢

典型的撫足分成背肢(notopodium)和腹肢(ventropidium),背肢的背側(cè)具一指狀的背須(dorsalcirrus),腹肢的腹側(cè)有一腹領(lǐng)(ventral cirrus),有觸覺功能. 有些種類的背須特化成疣足鰓(parapodial gill)或鱗片等.