比根

In the mycorrhizal inoculation test, the total dry weight of inoculated coneflower was more than control. The concentration of cichoric acid in the leaves of inoculated coneflower, 472.520 μg/mL was significantly higher than uninoculated control 245.638 μg/mL.

在菌根菌接种实验中，接种菌根菌的紫锥菊总乾重比未接种菌根菌的紫锥菊高，实验中也发现VA组叶子cichoric acid浓度为472.520

The effect of ferrous iron on the leaching rate of gallium and phosphorus was not significant.

镓和二价铁离子的沉淀率随磷酸根离子浓度的增加而增加，当磷酸根离子与金属离子摩尔比大于1：1后，磷酸根离子浓度对沉淀率的影响不再变化；温度对镓离子沉淀过程的影响较小，对二价铁离子的沉淀过程影响较显著。

Long ago there was a boy with bad temper.his father gave him a bag of nails and told him to knock in a nail into the fense around the yard when he got angry or quarreled with others.the first day the boy drove 37 nails into the fense.a couple of days later ,he learned to control himself so that he drove fewer and fewer nails as days past.he found it that it was easier to control his temper than knock in a nail.finally he nailed not even a nail a day ,he was so happy to tell his father.

从前，有一个脾气很坏的男孩。他的爸爸给了他一袋钉子，告诉他，每次发脾气或者跟人吵架的时候，就在院子的篱笆上钉一根。第一天，男孩钉了37根钉子。后面的几天他学会了控制自己的脾气，每天钉的钉子也逐渐减少了。他发现，控制自己的脾气，实际上比钉钉子要容易的多。终于有一天，他一根钉子都没有钉，他高兴的把这件事告诉了爸爸。

The secondary phloem is larger than the secondary xylem in the Heracleum , which is the typical storing root .

根据独活属植物根的次生韧皮部远比次生木质部发达的特点，确定独活属植物的根是典型的贮藏型根。

Auxometric nerve root retractor with pressoreceptor is more safe and reliable than traditional retractor.

应用带压力感受器的测力神经根拉钩比传统神经根拉钩安全可靠，可以最大程度牵拉神经根。

In the low B condition of the soilless culture, rapeseed seedlings were short of B, the seedlings were short and the leaves were malformed and the weight of the shoots decreased, the branch roots were fewer and snuff color, the weight of roots decreased, and the length of root and the ratio of shoot/root decreased, too. However, the high B- efficiency type of rapeseed had the a great ability to the low B stress, the growth of shoots and roots were better than the low efficiency, and the B concentration range of the rapeseed varieties which responded to the B scarce was 0.001 mg/L to 0.01 mg/L.

营养液培养条件下，苗期缺硼，甘蓝型油菜植株瘦小，叶片皱缩，地上部生长量下降；侧根少且呈现黄褐色，根重、根体积、根长以及根冠比下降；高效品种具有较强的耐低硼胁迫的能力，表现为同等缺硼条件下，对高效品种地上部和根系生长的抑制作用都相对较小，且品种间对缺硼反应差异最大的硼浓度范围为0.001mg／L—0.01mg／L。

The results show that:①The forest soils have the stronger nitrification, but also the nitrification in surface horizon is stronger than the undersoil's.

结果表明：①森林土壤有较强的硝化活性，且表土层比底层土强，同时根际土利于硝化作用进行，根际效应R/S在4.5左右；②淹水厌气培养24h，-N的消失率为52%～58%，占第10天的55%～71%，且表土层-N的消失率比底层土大；③参与同化反硝化作用的还原酶活性较强，在培养24h后，被还原的基质数量占加入基质数量的70%～90%。

The highest heat transfer coefficient for air flowing in the nine 3-D IFT with staggered arrangement fins is No9 tube. In the turbulent region, the heat transfer coefficient of No9 tube is a factor of 10.36 compared with smooth tube, and its thermodynamic performance coefficient is as high as 6.49; The average Nusselt number in the most superior 3-D IFT with staggered arrangement can be increased by about 1.04 times in the laminar flow, and 6.38 times in the transitional flow as compared with that in the smooth tube. The friction factor between fluid and tube wall can be 0.96 times in laminar flow, and 12.68 times in transitional flow as compared with that inside the smooth tube.

在进行实验的九根肋叉排三维内肋管中，换热最强的No9管与光管相比，在紊流区的换热强化比平均可达10.36倍，阻力增大比约为4.06倍，其热力性能系数高达6.49；在过渡流区的换热强化比平均可达6.38倍，同时阻力增大比约12.68倍；在层流区的换热强化比为1.04倍，而阻力增大比仅约0.96倍。

Greenhouse pot tests showed that treatments with GJ23,NJ08 and NJ28 have greatly inhibited gall formation on tomato roots.

用GJ23，NJ08和NJ218的菌悬液进行的温室盆钵实验，结果表明不同的浓度处理均对番茄上南方根结线虫的根结形成有显著的抑制作用，其中2倍菌液处理的平均根结数比对照分别少51.4%、62.5%和54.5%；它们还对番茄的生长有明显促进作用，2倍稀释菌液处理组的番茄冠重分别比对照高39.8%、32.0%和60.5%。

The VCL method and the displacement method are used to calculate the Stress Intensity Factors of semi-elliptical surface crack at the root of pipe screws, on the basis of which a simplified calculating model for screws contact is put forward so as to analyse the fracture intensity for oil drill pipe screw coupling. For the semi-elliptical surface crack with different shape and deep ratio at the root of female and male screws and the corner of male flange, the SIF has been studied systemically under inter-pressure, tension, bend and torsion loads and the approximate formulas encluding the structure parameters of oil drill pipe screw coupling, deep ratio and the shape parameters of surface crack are developed.

对工程实际中的多种石油钻杆接头螺纹连接件，就公螺纹齿根、母螺纹齿根、公螺纹台阶转角处存在的不同形状、不同厚度比的半椭圆表面裂纹，在拉伸、内压、弯曲、扭转多种载荷作用下的应力强度因子作了系统研究，在大量有限元计算基础上，建立了包含接头结构参数、裂纹形状、厚度比在内的近似计算公式。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失