The variation trends of natural gas price and selection of stand-by gas sources for piped natural gas are analyzed.
分析了天然气价格变化趋势及管输天然气备用气源的选择。
Variation trends of temperature in different seasons were similar to that of annual mean temperature except that in winter.
不同季节平均气温的变化趋势与年平均气温变化趋势基本一致，仅冬季平均气温有差异。
The comprehensive response of first frost and latest frost to climate change showed that the extened variation trends have obvious regional differences.
初霜、终霜对气候变化的综合响应表现在无霜期的延长变化趋势存在明显的区域性差异。
The variation trends of precipitation and total amount of water resources are identical, but the former's variational rate is smaller than the latter's.
水资源总量的变化规律和降水变化规律一致，但前者的变化率明显大于后者。
The influence of all the factors affecting solar ultraviolet radiation should be considered comprehensively as analysing the variation trends of solar ult...
在分析太阳紫外辐射的变化趋势时，应当全面考虑各个因子的影响。
The recent developments of modified pitch in China are introduced. The new manufacturers for pitch, improvement for technological process as well as its variation trends of standard are reviewed.
阐述了国内改质沥青的一些最新进展；介绍了一些新的改质沥青企业、生产技术的完善情况以及改质沥青的标准变迁情况。
For different material of particle electrode, there are reverse trends of particle electrode potential with the variation of inorganic salt concentration and organic compound concentration.
对不同的粒子电极材料，粒子电极电位随无机盐含量和有机物含量变化的趋势不同。
Although all sub-surface samples contain higher mercury than surface samples, the contents of Hg in profile soil overlying garbages of different maturities show different trends of variation.
不同成熟度垃圾的上覆土壤中汞都具有次表面样品总汞含量高于表面样品的特点，但变化趋势不同。
The practical examples indicate that real earthquake occurrences better correspond to the trends of high gradient zone of gravity variation.
实例表明，实际发生地震的情况和重力变化高梯度带的走向对应较好。
There are distinct differences of the trends of extreme temperature variation between different regions, but the periodic variation analysis show that the inter-decadal variations are consistent.
各区域的极端温度值时间变化存在较大差异，但是周期分析显示，各区域极端温度值的年代际周期振荡具有全省一致性。
The evolution of the global value chain of home appliance industry has showed two trends as location variation and link variation.
家电全球价值链的演变，呈现出区位变化与环节变化两大趋势。
The variation law of annual maximum peak discharge time series at Cuntan station of the upper reaches of Yangtze River has been probed, including trends and periods analysis.
从趋势分析和周期分析两方面分析长江上游寸滩站年最大洪峰流量演变规律。
The variation law of annual maximum peak discharge time series at Cuntan station of the upper reaches of Yangtze River has been probed, including trends and periods analysis.
从趋势分析和周期分析两方面分析长江上游寸滩站年最大洪峰流量演变规律。
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