The study reveals that the secondary xylem of 6 mangrove species of Sonneratia possesses the following characteristics:the diameter of vessel is small,the distribution frequency of vessel is high,the reperforating rate is high,the wall of vessel is thick,the wall of fibre is relatively thick and the wood parenchyma is short or sparse,whish is suitable with the environment.

應(yīng)用光鏡及掃描電鏡對生長在熱帶亚洲美女在线视频网、亞熱帶海岸潮間帶的 6種海桑屬紅樹植物的次生木質(zhì)部進行了解剖學(xué)研究表明：海桑屬 6種紅樹植物的次生木質(zhì)部具有導(dǎo)管直徑小av优选精品久久国产，導(dǎo)管分布頻率高人人干人人干人人操爽，復(fù)孔率高最新欧美操屄视频，導(dǎo)管壁厚和纖維壁較厚且具次生加厚色呦呦在线观看1区2区，木薄壁組織缺乏或稀少等與環(huán)境相適應(yīng)的特點欧美性交ααα,AAA。

The major changes include sparse and short and loose microvilli of endodermal epithelium cells, a reduction in apical microvesicles and subapical storage vacuoles, swilling of the mitochondria and a reduction or disappear in its cristea, a decrease in rough endoplasmic reticulum, abnormation in pattern and structure of nucleus, an increased vacuolation in cells, an extend in the interval of adjacent cells.

電鏡觀察發(fā)現(xiàn)，劑量在50g/mL以上時粗大猛烈进出高潮视频大全，YS上皮細(xì)胞微絨毛稀疏變短欧美淫荡性交免费，胞質(zhì)中貯液泡減少，線粒體在线免费看国产黄、內(nèi)質(zhì)網(wǎng)等內(nèi)膜系統(tǒng)發(fā)生多種細(xì)胞病理學(xué)改變久久精品国产国产精福利，細(xì)胞間隙增寬2级a片网站免费看，連接復(fù)合體破壞。

Petiole 8-20 cm, glabrous; leaf blade 5-7-foliolate; leaflets sessile, abaxially green, oblanceolate, 10-25 × 5-12 cm, abaxially glabrous or with sparse whitish hairs, ferruginous tomentose at base and in axils of lateral veins, base cuneate, margin crenate-serrate with teeth crenulate-serrulate, apex acuminate to subcaudate; lateral veins in 18-25 pairs.

葉柄8-20厘米日韩性色自拍视频在线观看免费播放，無毛欧美性免费大片；葉片5-7具小葉；小葉無柄啪啪啪av黄色，背面綠色色99免费在线视频，倒披針形， 10-25 * 5-12 厘米91极品福利精品国产，背面無毛或者有稀少帶白色毛的一级黄色毛片网址，被銹色絨毛在基部和在側(cè)脈腋處，基部楔形黄黄的在线网站，邊圓齒狀鋸齒具細(xì)圓齒到細(xì)鋸齒的牙齒av资源观看，18-25對的側(cè)脈。

The subpleural arteriole and its branches were short. The subpleural capillary meshes were sparse and web-like, and small holes made of microvessels were found occasionally.

胸膜下微動脈及其分支較短18岁免费看黄片，胸膜下毛細(xì)血管網(wǎng)呈現(xiàn)稀疏的網(wǎng)絡(luò)狀又黄又粗又大又长又色又爽，偶爾可見由微血管形成的&小孔狀&結(jié)構(gòu)。

The former' wave width is medium. It feeds mainly on aquatic small insects of order Diptera and Trichoptera, foraging in 5-20cm above water surface and midium- complicated forest by trawling and aerial feeding. The latter's wave width is shortest, which have disadvantage to discriminate targets from enviroment. It feeds mainly on even smaller insects of order Lepidoptera and Diptera, foraging in wide space or sparse-foliage forest by aerial feeding.

為小型蝙蝠情欲视频,欧美一级在线观看，前者聲波帶寬中等中国熟妇性视频一区，主要以水生小型的雙翅目、毛翅目為食日本ww视频，在水面5—20cm和中等復(fù)雜的林中進行拖網(wǎng)和空中捕食www.色色色色色色色色色，后者聲波帶寬最窄，主要以小型的鱗翅目免费黄色网址一区、雙翅目昆蟲為食AV影院网站，在開闊空間內(nèi)或稀疏林中進行空中捕食，視覺可能在捕食中具有重要的輔助作用H动漫全彩纯肉无码。

Temperate Ulmus pumila sparse forest grassland ecosystem in Inner Mongolia Plateau is a special ecosystem in China, and even in the world. Its study is of significance in deeply understanding the vegetation distribution patterns in the earth, and favoring the protection of this ecosystem.

內(nèi)蒙古高原分布的溫帶榆樹稀樹草原生態(tài)系統(tǒng)在中國乃至世界上都是一種特殊的生態(tài)系統(tǒng)日韩不卡视频毛片，對于它的研究可加深對植被分布規(guī)律的理解，且有利于該系統(tǒng)的保護中文字摹人人精品。

It may be so sparse and unpregnant with possibilities that there is only one living path through it -- the path we are currently on.

也許它是如此的稀疏和缺乏生殖力欧美熟妇白嫩大屁黑人啪啪，以至于事實上要想穿過整個空間只有一條唯一的途徑——也就是我們現(xiàn)在正走在它上面的那條途徑。

It may be so sparse and unpregnant with possibilities that there is only one living path through it -- the path we are currently on.

也許這種分布是如此稀疏且無法孕育可能性91黄色大片在线观，以至于事實上要想穿過整個空間只有一條唯一的途徑——也就是我們現(xiàn)在正走在它上面的那條途徑人人操,人人舔人人干。

It may be so sparse and unpregnant with possibilities that there is only one living path through it -- the path we are currently on.

也許可能性的分布過于稀疏而且不恰當(dāng)男人天堂精品自拍，以至于穿越這個形態(tài)庫只有唯一的路徑——眼下我們正走著的那條路徑裸体女人的视频一级A片。

We study the unsymmetric large sparse linear systems under distributed-memory environments. We present the Modified BiCG. And we also propose the s-BiCG methods which is suitable for parallel computing.

9研究了非對稱大型稀疏線性方程組的分布式并行求解，在提出修訂的BiCG算法的基礎(chǔ)上在线加勒比无码专区，提出了一種適于并行計算的s-BiCG算法一级黄网。