- 更多网络例句与四尖的相关的网络例句 [注：此内容来源于网络，仅供参考]
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Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.
2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下，起亲核加成反应，反应中间体5在室温用酸性丙酮水解，得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物，产率56%、通过制备薄层层析分得这四个立体异构体，它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似，推定了它们的绝对构型。
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Stamens 6, tetradynamous; filaments not dilated at base; anthers oblong, apiculate at apex.
雄蕊6，四强雄蕊；花丝而不是膨大的在基部；花药长圆形，具细尖的在先端。
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Stamens 6, tetradynamous; filaments dilated at base; anthers oblong or linear, apiculate at apex.
雄蕊6，四强雄蕊；花丝膨大的在基部；花药长圆形或线形，具细尖的在先端。
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Stamens 6, tetradynamous; filaments wingless or uni- or bilaterally winged, appendaged or not, toothed or toothless; anthers ovate or oblong, apiculate or not at apex.
雄蕊6，四强雄蕊；两侧具翅的花丝无翅或一或，附属物与否，无牙的齿或；花药卵形或长圆形，具细尖的或并非在先端。
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Fruiting pedicels erect or ascending; ultimate leaf veins not ending in apiculate callosities; fruit lanceolate, ovoid, or oblong, not torulose, often subappressed to rachis, slightly 4-angled
果梗直立或上升；末级的叶脉不结果是具细尖的胼胝体；披针形，卵球形，或长圆形，不近念珠状的果，通常近贴伏于轴，四棱形的稍 4 E。
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As when some mighty wave that thunders on the beach when the west wind has lashed it into fury- it has reared its head afar and now comes crashing down on the shore; it bows its arching crest high over the jagged rocks and spews its salt foam in all directions- even so did the serried phalanxes of the Danaans march steadfastly to battle.
正如巨浪击打涛声震响的海滩，西风卷起峰尖，一浪接着一浪地冲刷，先在海面上扬起水头，然后飞泻下来，冲荡着滩沿，声如滚雷，水波拱卷，对着突兀的岩壁击撞，迸射出四溅的浪花，达奈人的队伍，一队接着一队，蜂拥而至，开赴战场；各位首领统带着自己的
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It will promote the progress of hole making thechique and accelerate the automatization course of the tool production in our country. In addition, the author analyzes a drill grinding unit on a machining center and present a new grinding model for grinding four-plane facet drill points, which will be a new way of drill grinder design.
此外，作者还分析了一台加工中心上的钻头刃磨装置，提出了一种两轴合成四平面钻尖的刃磨理论，并对其应用前景进行了初步探讨，为钻头刃磨方法和刃磨机的研制开辟了一条新的途径。
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The Statue of Liberty wears the ancient Greek style clothes, while a crowns of millions of rays on head, which has seven sharp tip awns,the symbol of seven continents and four oceans on the earth.
自由女神穿着古希腊风格的服装，头戴光芒四射的冠冕，有象征世界七大洲及四大洋的七道尖芒。
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Comparing as BA, 0.1mg·L〓 TDZ was more effective in inducing germinating and developing of buds, regenerating prolific caespitose buds via organogenesis, promoting rhizogenesis and activity of root system greatly, as a result, acclimation survival rate was improved significantly. When leaf segments, cut from in vitro plantlets, were placed on MS media containing 0.1mg·L〓 TDZ, adventitious buds regenerated from segments. After transferred to propagated and rooted media, adventitious buds would proliferate and come into full plantlets.
与BA相比，TDZ的细胞分裂素活性至少高出一个数量级，0.1mg·L〓的TDZ能有效地诱导四个基因型芋茎尖的萌动、生长、大量增殖丛生芽，促进试管苗根系发生，将根系活力提高2倍以上，显著提高了试管苗的驯化成活率；浓度为0.01mg·L〓的TDZ能诱导魁芋类型的芋离体叶片切块产生再生芽点，转接后可增殖不定芽并形成再生植株。
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Beneath those rugged elms, that yew-tree's shade, Where heaves the turf in many a mouldering heap, Each in his narrow cell for ever laid, The rude Forefathers of the hamlet sleep.
香气四溢的晨风轻松的呼召，燕子从茅草棚子里吐出的呢喃，公鸡的尖喇叭，使山鸣谷应的猎号再不能唤醒他们在地下的长眠。
- 更多网络解释与四尖的相关的网络解释 [注：此内容来源于网络，仅供参考]
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Argyle Street：亚皆老街
[注:亚皆老街(Argyle Street)是一条贯穿香港九龙半岛油尖旺区及九龙城区的主要道路. 道路四线双程行车,大致为东西走向,西面由大角咀渡船街开始,穿过弥敦道、窝打老道及公主道等多条道路,最后于九龙城南部启德机场一带结束,西接樱桃街,
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tricuspid atresia：三尖瓣闭锁
由273(包括死产儿)病理解剖例的统计结果显示,心室中隔缺损占20.8%,法洛氏四重症占14.2%,大动脉转位占12.8%,肺动脉狭窄及闭锁(pulmonary stenosis or atresia)占5%,三尖瓣闭锁(tricuspid atresia)占4%.
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weeping forsythia：连翘
金钟花和连翘(WEEPING FORSYTHIA)都是木犀科连翘属的落叶灌木. 金钟花又叫迎春条、细叶连翘,原产华东一带. 枝直立,高可达三米,有时呈拱形,小枝呈四棱形,髓心薄片状,单叶对生,长椭圆形,深绿色,叶端锐尖,基部楔形. 花深,1-3朵腋生,先叶开放.
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pleura：胸膜
(四)胸膜 胸膜(pleura)衬于胸壁内面、膈面与纵隔面的壁层胸膜和包绕于肺表面的脏层胸膜,正常时不显影,只有在胸膜反褶处X线与胸膜走行方向平行时,才在X线片上显示为薄层状或线状致密影,见于肺尖胸膜反褶及叶间裂反褶.
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Scary Movie：惊声尖笑
>(Scary Movie)以其无厘头的恶搞方式取得了巨大商业成功,三集下来已经成为帝门公司的招牌电影系列. 下周该系列的第四集就要在北美上映了,从目前曝光的片段可以看到>、>、>、>、<<断背山&g
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shaded：阴影
而红色猫的单色却常因基因问题产生虎斑纹. 烟花:烟花(Smoke)系指毛尖色占有二分之一的部分. 阴影:阴影(Shaded)系指毛尖色占有四分之一的部分. 金吉拉:金吉拉(Shell)系指毛尖色占有八分之一的部分.
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carneol：染粉红玉髓的商品名称
Carnegie Gem 拼合石仿钻的一种商品名称:冠部为合成尖晶石,亭部为钛酸锶 | Carneol 染粉红玉髓的商品名称 | carre 四方形阶梯琢型宝石
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Dermoptera：皮翼目
因为四尖兽的颊齿低冠,臼食肉目(Carnivora) 此目为真正的食肉动物,也叫新食肉目,牙齿特化完全适于食肉,门齿强大可以咬住东西,犬齿匕首状,是用来杀死猎获物的主要武器,尤其翼手目(Chiroptera)和皮翼目(Dermoptera) 翼手目是一种特化
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quadriurate：四尿酸盐
quadrituberculate 四尖齿型 | quadriurate 四尿酸盐 | quadrivalenttetravalent 四价的
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Sanga：桑加
""那是白色的海鳐,不是一般称为'桑加'(sanga)的黑鳐(ray). 白色海鳐不一样的. "阿玛迪欧总共抓过三四只白色海鳐,他总是手执着钩跳上它们的背. 它们的直径―――从翼尖到翼尖―――还不到两英寻. 但这不是真的布尔沙. 梅尔维尔创造心目中的动物,