查询词典 root-mean-square

We adopted many forestry techniques, including scarifying, weeding, draining, fertilizing, digging far-between dyke, choosing and breeding eximious clone. We also took measures of excavating aperture and irragating root, directly watering root, daubing remedy, stubbing died trees and sterilizing soil in the aperture.We carried through integrated preventional measures of chemical prevention and biological prevention, by using 200×CuSO4, 70% mancozeb 800×5% Chlorothalonil 800×, and Suillus grevillei. All of the meaures got favorable results. The preventional effect exceeded 72%. The incidence of disease descended from 15.5% in 1998 to 2.8% in 2002.This kind of disease was controlled on the whole.

自1998年开始，经过5年的系统研究，通过松土除草、排水施肥、挖隔离沟，选育优良无性系等林业技术措施；采用挖穴灌根法、直接浇根法、涂药法、死树挖除并对穴内土壤消毒等方法，使用硫酸铜200倍液、70％代森锰锌800倍液、5％百菌清800倍液和厚环乳牛肝菌进行化学防治和生物防治等综合防治技术，均取得了很好的效果，防治效果达72％以上，发病率由1998年的15.5％，下降到2002年的2.8％，使该病基本得到了控制。

The results show that, under each drip irrigation treatment before the tasselling stage of spring maize, the fluctuation of average soil water content and soil matric potential at different soil depthes are comparative low under high frequency drip irrigation treatment, and the HDI can hold stable soil water content. The drip irrigation can obviously delay the effect of air temperature on the soil temperature, which was influenced by irrigation process, soil water content and crop growth stages. In addition, the irrigation frequency affects the spring maize root distribution in the soil, and the HDI improves the probability of root distribution in upper soil(0~40 cm). The yield difference of spring maize for irrigation frequency treatments is not significant under the typical field irrigation model combined irrigation with precipitation.

试验结果表明：在春玉米抽雄期以前阶段实施的滴灌各处理中，高频滴灌下土壤平均含水率和不同深度处的土壤基质势波动幅度较小，高频滴灌下土壤水分能保持在一个比较稳定的范围；土壤温度受灌水过程、土壤含水率及作物生育阶段的影响较明显，滴灌能显著延迟气温对土壤温度的影响；灌水频率对春玉米根系分布存在一定影响，高频灌溉能显著促进春玉米根系在上层土壤(0～40 cm)中的分布；此外，在这种典型的灌溉和降雨相结合灌溉模式下，不同灌水频率下玉米产量差异不显著。

When content of Nicotine increased, protein decreased in leaf and root of toped tobacco. This probably because the content of IAA decreased rapidly and acted as the first signal to transfer to root in toped tobacco, and this made the second signal 桝BA and ZR increased, activated biosynthsis of Nicotine.

打顶以后烟碱含量增加的同时，叶和根中的蛋白氮含量均降低，还原糖含量增加，这可能是由于打顶以后，IAA的迅速降低作为第一信号，沿木质部向下运输到根，引起根部的第二信使一ABA、ZR等含量的增加及GA；含量的减少，激活烟碱合成的三种酶，使总氮中用于合成蛋白质的氮减少，自由氨基酸增加，促进烟碱的合成。

Th e root systems of w heat and corn,especially the lateral roots and root hairs w ere promoted in the improvin g acid soil with lignin sludge,which increased the absorption ca...

污泥改土对小麦和玉米根系，特别是对侧根、毛细根发育的促进作用相当显著，发达的根系增强了植物吸收土壤中氮、磷、水分等的能力。

The experiment of the auxiliary heated arc plasma generator shows that thekey arc root has contraction under the condition of having magnetic field when thekey arc root is at the edge of the cathode surface.

在辅助加热电弧等离子体发生器的实验中看到：在有外磁场的情况下，主弧弧根在阴极边缘时，弧根有收缩的迹象，而当主弧弧根在阴极中心附近时，观察不到明显的弧根收缩迹象，并拍摄到有双弧柱的图片；当关掉磁场和弧电流〓时，主弧在阴极和阳极之间稳定的燃烧，主弧弧根稳定在阴极中心附近的一点上，而且弧根没有收缩的迹象，主弧弧根亮区的直径约为6.8毫米，与弧柱段的亮区直径相差无几；因而从实验结果分析可以看出，阴极表面温度的升高，能使主弧弧根直径增大：另一方面，由于主弧弧根直径的增大(即也意味着主弧弧根截面积的增大)，因而使电弧通过主弧弧根传入阴极表面的有效比热流降低，从而减少了阴极烧损。

MethodsSixty patients with positive RuV-IgM were randomly assigned to two groups equally, the treatment group was medicated by HLG (one dosage per day, containing milkvetch root, isatis root and basket fern, each 30 g), while the control group by ribavirin (0.2 g, three times per day) for 20 days.

方法将RuV-IgM阳性患者60例随机分为2组，每组均为30例。治疗组给予黄蓝颗粒(黄芪30g板蓝根30g贯众30g，武汉市中西医结合医院制剂室提供)口服，每天1剂，分两次温开水冲服。

The results showed that affecting degree of P supply level in nutrient solution on phosphatases of sugar beet root varied with the kinds of phosphatases,beet varieties and the spatial distribution places from the root in vivo to the substrate.

结果表明，营养液中的供磷水平对甜菜磷酸酶的影响程度因其从根内到根生长介质空间的分布位置、品种和磷酸酶的种类而异。

The results show that the differences of beet root production, sugar and sugar production in different species and location have reached significant levels (F.01), variety and location of interaction effects are achieved very significant (F.01) or significant levels (F.05); Considered root production, sugar and sugar production and stability, ZM203, KWS9415 are better for the stability of high-yielding varieties, D0316, ZM203 are better for the stability of the high-sugar varieties, ZM201 for the stability of a high-yielding sugar, 2003-8 varieties is good for the stability of high-yielding sugar deviation species.

结果表明：甜菜块根产量、含糖率和产量糖在不同品种和地点的差异都达到极显著水平(F.01)，品种与地点互作效应都达到极显著(F.01)或显著水平(F.05)；综合考虑块根产量、含糖率和产量糖的表现和稳定性，ZM203、KWS9415为高产稳定性较好的品种，D0316、ZM203为高糖稳定性较好的品种，ZM201为高产糖量稳定性较好的品种，2003-8为高产糖量稳定性偏差的品种。

Eight sugarbeet varietieswere used to measure the content of potassium,sodium,harmful nitrogen and juice purity in beet root as quality characters,at the same time,sugar content,root yield and sugar yield were measured as major agronomic characters.

李文通过以8个甜菜品种为试材，检测块根中K、Na、有害N含量及纯度，作为主要品质性状，以含糖率、根产量和产糖量作为主要农艺性状，采用灰色关联度分析和优势分析法进行统计分析。

From the point of view of structure,bamboo cell wall ratio,amount of bundle per unit area,fraction of bundle sheath,fraction of vessel increase from the root to the top of the bamboo,while fractionof parenchyma.Single bundle sheath area decreases with the increase of height.Fiber length,fiber width and vessel length increase from the root to the top andget theirs maximum value at the length of 17th node to 23rd node and thendecrease.Fiber length and width ratio slightly decreases while vessel widthincreases with the increase of height.

从构造角度来说，竹材胞壁率、单位面积维管束个数、纤维束比量、输导组织比量从基部到到梢部随着高度增加而增加，而薄壁组织比量、单个维管束纤维束面积随着高度增加而减小；纤维长度、纤维宽度、导管长度从基部到梢部随着高度的增加而增加，在第17竹节到第23竹节达到最大值，而后下降，纤维长宽比随着高度的增加而缓慢下降，导管宽度随着高度增加而一直增加。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。