均匀间距

The composite film appeared semitransparent and brown to yellow from optical microscopy. Results show that shorter time sol-heating results in thiner film with less surface roughness, less conglutination to base, and easily to disconnect, while longer time sol-heating results in thicker film with better conglutination to base and worse roughness. RDX distributes in the film everywhere on the whole but discretely on the scale of 2.4 μm according to EDS results. XRD curve of RDX/RF film shows the superposition of RF non-crystal bread curve and RDX crystals diffraction curve. RDX diffraction peaks are broadened and its crystal size is calculated to be lower to 43 nm.

实验所得薄膜半透明，呈棕红色至黄色；实验表明，溶胶恒温加热时间较短时，所得薄膜的单层厚度较小，较平整，但附着力小，干燥后易脱落；恒温加热时间较长时，所得薄膜的单层厚度较大，不易脱落，但表面平整性较差；能谱测试表明，薄膜中的RDX整体上分布较为均匀，但在测试点位间距为2.4μm的微观尺度上呈离散状分布；XRD测试表明，RDX/RF复合物薄膜表现为RF的非晶态馒头峰与RDX衍射峰的叠加，RDX衍射峰明显宽化，其晶粒度可低至43 nm。

It was proposed that the requirements should be satisfied for the models of designing dripper discharge when applied in engineering design.

滴头间距对垂直滴灌管方向和湿润锋交汇处土壤水分均匀性有一定影响，但影响不大。

In loam soil the USMDL increases with dripper discharge.

土壤湿润均匀度随滴头间距的增大而减小。

In addition, moisture uniformity could be improved by increasing dripper discharge, amount of applied water or decreasing dripper distance.

此外，通过试验发现，增大滴头流量、灌水量或缩小滴头间距均能有效改善土壤湿润体的均匀性。

In terms of the question of soil moisture uniformity for line source drip irrigation, experiments were conducted to study the effects of dripper discharge and irrigation water supply to soil moisture uniformity.

本文同时针对线源滴灌均匀性问题，通过试验研究了滴头流量和灌水量及滴头间距对土壤湿润带内水分分布均匀性的影响。

The experimental results show that there is an essential difference between the uniformity of dripper discharge along the drip line and the uniformity of soil moisture in field in terms of the design of linear source drip irrigation.

线源滴灌设计中，滴灌管出流均匀性与土壤湿润均匀性有本质不同，前者仅仅是后者必要的基础，但是要保证线源滴灌土壤湿润均匀性，还需要考虑滴头间距、滴头流量、滴水量和土壤质地的差别。

The results indicated that irrigation water supply and dripper discharge had extreme effects on the moisture uniformity in soil along the drip irrigation pipe direction for line source drip irrigation, the soil moisture uniformity would be raised with the increase of irrigation quantity and dripper discharge.

试验表明：线源滴灌下，灌水量、滴头流量、滴头间距对沿滴灌管方向的土壤湿润区均匀性影响最大，随着滴头流量或灌水量的增加以及滴头间距的减小，湿润均匀性提高。

For narrow-band signals, three uniform linear arrays, whose grating lobes are not overlapped by setting the angles between the arrays and the same pointing of main-lobes, are used and then multiplication of three patterns is operated to reduce the grating lobes of large-spaced array, which makes the array operate in broad band. For wideband or ultra-wideband signals, array pattern in the whole frequecy band is identical by designing the frequency-dependent weighting coefficients based on the Bessel function, and therefore grating lobes in high frequency parts are suppressed.

对于窄带接收信号，利用三个相交的大间距均匀线阵，通过设置它们之间的角度和主瓣指向相同使各自的栅瓣位置错开，然后把三个方向图相乘从而抑制大间距阵列栅瓣，因而适用于宽频带工作；对于宽带接收信号，利用Bessel函数设计与频率有关的加权系数，产生整个信号带宽内恒定的方向图，从而抑制了高频部分的栅瓣。

The results show that the tube pitch is the key factor that affected the size of uniform heated area, and the tubes arrangement has not notable effect on irradiance uniformity; When L/R is increased, Lobj at which the irradiation distribution is uniformly on the heated object surface is increased.

通过计算得出定向反射管间距是影响均匀加热面积大小的主要因素，管束布置方式对辐照度均匀性影响较小；随管长与半径比增加，物体表面辐照度均匀时，对应的加热距离增加。

Firstly, in contrast to the dipole resonator, the folded dipole resonator is used to improve the frequency responses. Secondly, two types of folded Yagi-Uda arrays are fabricated, one is the original array with uniform length and spacing, the other is the optimum array with perturbed length and spacing to obtain a higher directivity gain.

首先，应用摺叠式耦极谐振器取代原有耦极谐振器以改善频响应，接著设计组摺叠式Yagi-Uda阵天线，一是保持均匀长与间距的初始阵，一是微调长与间距的优化阵，以得到较高的方向增。

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。