The mobil array consisting of advanced digital seismographs will be installed in yanqing of northwest beijing and other seismically active areas in the chinese mainland for near - source observations 该计划将使用由新一代数字地震仪构成的流动台阵在北京西北的延庆和中国大陆的其他地震活动区进行地震近场观测。
In this region , most endogenetic deposits are controlled by these large magmatic activity areas ( zones ) , and a large magmatic activity area ( zone ) constitutes a metallogenic system 这些岩浆岩活动区（带）控制着内蒙古自治区东部地区大部分内生矿床，也就是说每一个大型岩浆岩活动区（带）实际上是一个成矿系统。
" aircraft movement area " refers to the area in an airport used for the takeoff and landing and other ground movements concerned of aircraft , including runway , taxiway , connecting taxiway and passenger apron “航空器活动区” ，是指机场内用于航空器起飞、着陆以及与此有关的地面活动区域，包括跑道、滑行道、联络道、客机坪。
Organic matter and available n of topsoil decreased in recreational areas , but the soil bulk density and ph increased . affected by garbage decomposing , soil available p concentration varied obviously in recreational areas 活动区土壤有机质含量降低， ph值升高，容重增大，碱解氮含量降低，受垃圾分解影响，速效磷含量发生变化。
The pixel array of the ccd is 544x544 . theoretical analysis shows the solar x - euv imaging telescope can observe the active region , flare , cme , eit wave , " dimming " , " sigmoid " and " cusp " phenomena 太阳x - euv成像望远镜能够观测活动区、耀斑、冕洞、 cme 、 eit波、 dimming 、 sigmoid 、 cusp等影响空间天气变化的太阳活动、太阳爆发先兆现象、太阳爆发伴生现象。
After parking my car and setting up my tent , i walked to the main area and found myself gazing in wonder as darkness fell and the center s decorative christmas lights began to glow , dancing like hundreds of tiny stars on the tree branches 在停好车并搭好帐篷后，我便漫步来到主要活动区，此时夜幕已低垂，我惊奇地环视四周，发现妆点圣诞节的小灯泡闪闪发亮着，宛如成百成千的小星星在树梢上婆娑起舞。
The discuss on the topographical environment characteristics of typical modern marine hydrothermal activity regions will be helpful to increase understanding of the modern hydrothermal activity , the distribution rules of its mineral resources and the forming causes and mechanism , etc 摘要对现代海底热液活动区地形环境特征的分析有助于增进对现代热液活动及其矿产资源分布规律、热液活动成因机制等的了解。
Solar radio metric wave radiation events observed using the acoustic - optic spectrograph at the yunnan observatory in march of 1991 with associated optic activity and correspanding evevts are analyzed . some characteristics of the events are obtained in this paper 利用云南天文台声光频谱仪在1991年3月记录到的太阳射电米波辐射事件、光学活动及相关事件作了分析，得到来自6538活动区太阳射电米波事件的一些基本特性。
Compared to non - tourist areas , in recreational areas , the number of plant species and coverage of vegetation in arbor layer and shrub layer decreased and the composition and community structure of vegetation trended to be simple . at the same time , regeneration of vegetation were suppressed 景点活动区与背景区相比：乔木层、灌木层植物种数及盖度减少，群落组成及结构趋向简单化，更新受抑，草坪生物量、高度、盖度明显受到冲击。
