卷
- 与 卷 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Families, 62 genus and 107 species of Pteridophyte resources have been found in Meihuashan mountain, west of Fujian province, which include more than 5 species of resources like Selaginellaceae, Pteridaceae, Athyriaceae, Aspleniaceae, Thelypteridaceae, Dryopteridaceae and Polypodiaceae and over 4 genus of plants like Selaginella, Plagiogyria, Pteris, Asplenium, Cyclosorus and Arachniodes as well as Cibotium barometz, the second state specially-protected Pteridophyte.
福建省闽西梅花山共有蕨类植物30科62属107种,种数5种以上的科有卷柏科、凤尾蕨科、蹄盖蕨科、铁角蕨科、金星蕨科、鳞毛蕨科、水龙骨科;种数4种以上的属有卷柏属、瘤足蕨属、凤尾蕨属、铁角蕨属、毛蕨属、复叶耳蕨属,其中包括国家二级重点保护蕨类金毛狗。
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The representative families are Dryopteridaceae, Athyriaceae, Polypodiaceae, Thelypteridaceae, Selaginellaceae and Aspleniaceae. The main genera are Dryopteris, Selaginella, Asplenium, Arachniodes, Pteris, Allantodia and Plagiogyria. The top families' distribution types are cosmopolitan and pantropic ones, the main genera are pantropical ones, while species distribution type belong to the east Asia type and represents the feature of subtropics transition to warm temperated areatype. As for the order of closeness, the sequence of pteridophytes floristic relations between Songyang and the adjacent regions goes as Southwest China, South China, Central China, Japan, North China, Northwest China and Northeast China. The six upland pteridophytes next to Songyang can be put into the same natural flora because of its closest relationship. But compared with other 11 upland fern flora in China, fern in Songyang is not rich enough. There are 37 species endemic to China in Songyang.
结果表明,松阳蕨类植物共有38科72属161种7变种;优势科为鳞毛蕨科、蹄盖蕨科、水龙骨科、金星蕨科、卷柏科、铁角蕨科,优势属为鳞毛蕨属、卷柏属、铁角蕨属、复叶耳蕨属、凤尾蕨属、短肠蕨属、瘤足蕨属;科的分布以世界分布和泛热带分布为主,属的分布以泛热带分布为最多,种以东亚分布类型为主,特别是中国—日本分布类型最多,表现出亚热带向暖温带过渡的特点;本区与邻近地区蕨类植物区系关系的密切程度由大到小依次为西南、华南、华中、日本、华北、西北、东北;与邻近的6个山地蕨类植物区系的亲缘关系密切,可以划为同一自然区;与国内11山地蕨类植物区系相比,松阳的蕨类植物丰富程度不高;松阳拥有37种中国特有蕨类植物及一些珍稀蕨类植物,有较高的保护价值。
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The technology of bending by bendable roller was introduced briefly. A finite element model of the process of BBBR was built by the general finite element program.
简单介绍了可弯曲辊卷板成形技术,利用通用有限元程序建立了可弯曲辊卷板成形过程的有限元模型。
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The testing, answering system was developed out by the ASP.net. Two test papers were abstracted from the system by the combination of the certain proportion and binominal distribution mathematical models stragety. The two test papers were tested by 52 students through the cross design. The difficulty and discrimination of items and the reliability and validity of the test papers were worked out with Education Statistics, factor analysis, relative analysis etc.
运用ASP.net技术开发了组卷、答卷、阅卷系统,应用重点等级定额比例分配与难度等级二项分布数学模型相结合的组卷策略随机抽出2套试卷,采用交叉设计对52名预防医学本科学生进行测试,用教育测量学原理、因子分析、相关性分析等方法分析两套试卷试题的难度、区分度和试卷的信度、效度。
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At least cultivars had been studied and selected for commercialized plantation and were name as Butea I and II.
至少品种进行了研究,并选定了商品化种植,并获得名称为化妆品第一卷和第二卷。
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The key point of the structure of the utility model is that: the other side of the reducer that is arranged on the platform is provided with a hoisting device; the roller shaft end of the electronic controlled windlass is provided with a hub, a damper brake is arranged outside the hub; the input castellated shaft of the reducer that is arranged on the electronic windlass is provided with duplicate gears that have different amount of teeth.
本实用新型包括标准节,两侧标准节的中间为平台,电控卷扬机的卷绳通过平台上的滑轮同吊盘相连;平台上的减速器的一侧设置有可提升平台的具有卷绳的滚筒,平台上设置有具有滑轮的支架,其结构要点平台上的减速器的另一侧设置有提升装置;电控卷扬机的滚筒轴端设置有轮毂,轮毂外设置有制动闸;电控卷扬机的减速器的输入花键轴上设置具有不同齿数的双连齿轮,双连齿轮之间的凹槽内的拨杆同减速器外的摇把相连。
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Our company products are produced by using computer spring coiling machine with selecting high-quality imported and domestic steel wire.
我公司弹簧产品,均采用电脑卷簧机卷制,配合精选优质的进口、国产钢丝绕制。
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The plate bending machine is a plate processing equipment which can bend plate into arc or columniform object.
卷板机是一种把平板卷制成各种弧形和圆桶状物体的板材加工设备。
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A fresh wind from the sea ruffled our clothes and a spray showered the ground at our feet with a soft hiss, as if condoling with us.
这时,拂拂的海风吹着我们的衣襟,一卷一卷浪花拍到我们的脚下,发出柔和的音响,好像在为我们惋惜。
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The C, in relation to Cw and Cd, was obtained with the consultable value of 0.178 for the continuous roof vent, 0.318 for the rolling-up roof vent for the rates due to wind forces, and Cd was obtained with the consultable value of 0.667 for the continuous roof vent, 0.863 for the rolling-up roof vent for the rates due to buoyancy effect in related situations.
在实验条件下,以风力为主导通风时Cd 和Cw的相关参量C的参考值对天窗开启式系统为0.178,对卷膜通风式系统为0.318;而在以温度为主导通风时Cd的参考值对天窗开启式系统为0.667,对卷膜通风式系统为0.863。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。