查询词典 cotton gum

SSR loci were proved to be derived from the Island Cotton primogenitor by compared all polymorphic marker loci with the Island cotton primogenitor (Ashimouni, a famous Egypt Island cotton cultivar) and the standard genetic line (TM-1) of Upland cotton.

利用这些引物进一步和TM-1、优质纤维渐渗片段的供体Ashimouni作比较，初步鉴定出10个SSR位点与海岛棉渐渗有关。

Lack of significant growth in the world average yield in upland cotton since 1991 reinforces the impression that the cotton industry has entered into a long梩erm period of slow growth in production. Breeding contribution to the yield growth has sharply decreased, and the result of cotton cultivar performance of regional test displayed that the potentials for the growth of yield in new developed cultivars was delimited, which implies that we must pay more attention to the studies on the diversity of cotton cultivers and genetic mechanism for yield traits.

自90年代初以来，英国及世界的棉花平均产量没有明显得到提高而育种方面对产量的贡献已大大降低；我国的棉花品种区域试验结果也表明，常规品种的增产幅度较低，需要深入研究棉花品种的遗传多样性和产量性状的遗传规律。

Generally,it is considered that cotton fibre is a column and its surface is smooth.The surface structure of Xinjiang long fine hair cotton is researched by using electronic microscope scanning (S-570 Japan).The result shows that the cotton fibre is not a column,but is spiral.The fibre of only 15%does not twist.The surface of the fibre is not smooth,and there are burrs on it.These characteristics would be another important factor effecting the stickability of cotton.

一般认为，棉纤维呈圆柱状，纤维表面是光滑的，笔者以新疆长绒棉为研究对象，用日立S-57日扫描电镜，研究了棉纤维的表面结构，结果表明，棉纤维并非呈圆柱状，自然状态下呈螺旋形，象氨基酸那样，根据概率估计，没有扭曲的约占15%，棉纤维表面并不光滑，有毛刺，这种结构特性是影响棉花粘着性的又一重要因素。

Results show that the insect community structure in the Bt fields differed sharply from that in the CV fields. The populations of the Lepidopterous pests, such as cotton bollworm, corn borer, diamond bollworm and cotton leaf caterpillar, decreased significantly in the BT fields, while the populations of non-target pests with piercing-sucking mouthparts, such as leaf bugs, cotton spider mites, cotton aphids and whiteflies, increased obviously. Much more predators, such as spiders and ladybirds, and much less parasitiods of Helicoverpa armigera were observed in the BT fields.

结果表明，与常规棉田相比，Bt棉田棉铃虫、玉米螟、金刚钻、棉小造桥虫等鳞翅目害虫种群数量显著降低，而盲蝽象、红蜘蛛、棉蚜、烟粉虱等非靶标刺吸式害虫种群数量显著增加；蜘蛛、瓢虫等捕食性天敌种群数量显著增加，而棉铃虫的寄生性天敌种群数量则显著下降。

The life table of natural population of cotton bollworm in cotton was studied. The important factors that caused the death of second and third generation of cotton bollworm in cotton field were predacious natural enemies.

棉铃虫种群数量动态连续12年用捕虫网取样方法对麦田第一代棉铃虫种群发生趋势进行了调查，发现南疆粮棉混作区种植制度的改革已导致棉铃虫成为农业生产的重要害虫，并呈加重趋势发展。

As to the problem that the top apron cradle of carbon fiber is of complicated structure and high requirement of elasticity plus difficult cleaning, to upgrade quality of yarn, an introduction is made to the flat top apron cradle RS-6939 regarding its features. Through spinning practice with 100% long fiber cotton J 7.3 tex, J 4.9 tex, 100% fine fiber cotton J 9.7 tex, 14.5 tex, conclusion is made that the flat top apron cradle is of good abrasion resistance and rigidity, free of maintenance, stable quality, good anti-static property, thus being propitious to further upgrading evenness of resultant yarn, reducing slubs and snicks plus cotton neps, especially in production with fine fiber cotton.

针对目前使用的碳纤弹性上销结构复杂，对弹簧要求较高、不易清洁的现状，为了提高纱线品质，介绍了RS-6939型直板上梢的特点，并通过纺J7.3tex（100%长绒棉）、J 4.9tex（100%长绒棉）、J9.7tex（100%细绒棉）、J 4.5tex（100%细绒棉）的纺纱实践，指出RS-6939型直板上销具有较强的耐磨性和刚性，不需维修，质量稳定，杭静电性能良好，对进一步提高条干水平，减少粗节、细节及棉结非常有利，特别是在纺细号长绒棉时，效果更加显著。

Simen Town, Yuyaoinsulation material factory (the original Lang-Xia Town, Yuyao Glass asbestos products factory) specializing in the production of F series dry type, wet cotton FD series of stone products, has worsted; hand spinning; clean stone cotton cloth, dust has stone cotton cloth, spinning machine; dry-spinning of asbestos line, stone cotton cloth, asbestos rope button, ribbon, asbestos braided rope, asbestos insulation board, asbestos paper, such as°sealed insulating material, widely used in national defense, metallurgy, petroleum, chemicals, electric power, shipbuilding, paper, pharmaceutical, mining and other industries, product specification is complete, stable quality, best-selling country and enjoy good reputation.

余姚市泗门镇佳鑫保温材料厂(原余姚市朗霞镇玻纤石棉制品厂)专业生产干式F系列，湿式FD系列石棉纺织制品，有精纺；手纺；无尘石棉布、有尘石棉布、机纺；干纺石棉线、石棉布、石棉钮绳、织带、石棉编织绳、石棉保温板、石棉纸、石棉板等密封保温材料，广泛应用于国防、冶金、石油、化工、电力、造船、造纸、制药、矿山等行业，产品规格齐全，质量稳定，畅销全国，享有良好信誉。

137 Crude protein also has effect on controlling the growth of cotton aphid, cotton bollworm, striped rice borer, and the crude protein deposited with 25 percent ammonium sulfate has the most significant effect on controlling cotton bollworm and cotton aphid.

88—137粗提蛋白质对棉蚜、棉铃虫、二化螟的生长发育也有一定抑制作用，其中用25％硫酸铵沉淀的粗提蛋白质抑制棉铃虫、棉蚜作用最明显。

Companies affiliated with the cotton processing plants, seven yarn, cloth factories and power plants, with an annual output of 7,000 tons of lint cotton processing line, with ring 173,000, 12,192 air spinning, various loom 765 Taiwan, with an annual output of 45,000 tons of cotton yarn, cotton cloth production capacity of 30 million meters.

公司下属有棉花加工厂、七个纱、布厂及动力厂，具有年产皮棉7000吨的棉花加工生产线，拥有环锭纺173000锭，气流纺12192头，各类织机765台，具备年产棉纱45000吨、棉布3000万米的生产能力。

China cotton; Ceylon cotton; Siam cotton; tree cotton

中国棉；锡兰棉；暹罗棉；木棉

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。