La Nina is a natural 3-6-year cycle, and the cold stretch of a periodic thermal oscillation in ocean surface temperatures that occurs throughout the tropical Pacific.
拉尼娜每隔3到6年发生一次，太平洋热带地区海水温度会随之发生周期性的异常变冷。
Because the height of micro tips on cathode surface can be eroded by the negative current, surface finishing is better in the micro-electroforming by periodic reverse pulse current than pulse current.
由于负向电流可以腐蚀削减铸层表面微观突起的生长高度，因此周期换向脉冲电流微电铸与单向正脉冲电流微电铸相比更易获得较好的铸层均匀性。
Firstly, it directly influences the periodic variation of precipitation and air temperature, then influences the periodic variation of runoff based on the underlying surface.
天体运动直接影响降水和气温的周期变化，进而在一定的下垫面条件下，影响径流的周期变化。
Theoretical analysis, numerical calculation and experimental study are tarried out for this kind of antenna, by use of the theory of two-dimensional periodic admittance surface.
本文对上述天线应用二维周期导纳表面理论进行了初步的理论分析、数值计算和实验研究。
The system design and optimization depends upon the research on the effect of electro-heating pulse of periodic electro-thermal deicing system on surface temperature.
研究周期性电热除冰系统加热控制律对表面温度的影响是进行系统设计和优化的前提。
Periodic use of the system prevents RCF and corrugation before they appear, while optimising the rail surface.
定期使用该系统可以防止在RCF和波纹磨损的发生，同时优化铁路表面。
A frequency selective surface (FSS) is a metallic periodic structure with frequency selective properties. Depending upon design, it may be low-pass, high-pass, band-pass, band-stop filter.
频率选择表面（FSS）是具有选择频率功能的一块金属周期结构，它可以被设计成低通、高通、带通、带阻滤波器。
The results obtained from multiple scattering method show that the periodic dielectric spheres on the upper surface of the metal could induce surface plasmons on the metal-dielectric interface.
用多重散射法计算的结果显示金属上侧的周期性排列的电介质小球可诱发金属-电介质表面上的表面等离子激元。
The difference in the energy of a chain in the amorphous bulk (3d periodic) and in the film (2d periodic) allows us to calculate the internal energy contribution to the surface energy.
同时通过聚丙烯无定形本体(3d周期性)和薄膜(2d周期性)中的链的能量的差异计算了薄膜内部能量对表面能量的贡献。
A new principle for free electron lasers is proposed for the first time by using very strong surface periodic potential caused by the spontaneous polarization of ferroelectric single crystals.
本文利用铁电晶体自发极化产生的强大周期性表面势，首次提出新的自由电子激光原理。
If the door board is made of wood or paint sheet, periodic waxing is the most effective way to maintain bright-colored surface, while glass or resin board needs no waxing.
如果门板采用木质或烤漆板材，定期打蜡是保持表面鲜艳亮丽的有效方法，而玻璃或树脂板材则不需要打蜡。
A new optical profilometry linearly coded profilometry is presented. It USES a periodic linear structure illuminating light to code the surface and the phase shifting technique to decode the phase.
提出一种新的光学轮廓术线性编码轮廓术，它利用周期线性结构光编码三维物面，并辅以相移技术来解调相位。
Based on the heat balance equation of snow surface and the periodic variations of temperature field and heat flow, the Fourier model of snow surface is established.
根据雪面温度域以及热流的周期性特点，在雪地表面热平衡方程的基础上，建立了雪面辐射温度的傅里叶模型。
It suggests that the phase structure can be controlled by lowering the surface energy of polyetherimide and it is a possible way to obtain co-continuous structure with a smaller periodic distance.
因此，通过改变固化温度和聚醚酰亚胺的端基来降低聚醚酰亚胺的表面能，可以在一定程度上调控反应诱导相分离体系的相结构，并获得相间距较小的双连续结构。
The common calculating methods, i. e. using periodic boundary condition and curved surface replaced by flat plane, were discarded.
摈弃了目前国际上通常采用的周期边界条件，以及以平板代替曲面的做法。
Quasi-periodic variations of the sea surface temperature (SST) field from Huanghai Sea are analysed by using the energy spectrum method.
本文用能谱方法分析了黄海的 海表面水温（SST）场的准周期变化。
The X Lounger is based on a single ray, traced along a periodic double curved surface.
X懒人沙发是基于单线条，沿着曲面双层折叠而成的。
The X Lounger is based on a single ray, traced along a periodic double curved surface.
X懒人沙发是基于单线条，沿着曲面双层折叠而成的。
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