From the small number of impact craters that appear on Martian lava flows, one can estimate that the planet was volcanically active as recently as a half-billion years ago—and may be active today.
从火星熔岩流上出现的少量陨石坑中，我们可以估计，在5亿年前，这个星球上的火山还很活跃——也许现在依然活跃。
Pyroclastic flows raced down the northern flank of the volcano, leveling trees and destroying buildings in the village of Harris, which was abandoned after soufriere Hills became active in 1995.
火山碎屑沿着山的北坡奔腾而下，铲平了树木，摧毁了哈里斯村(1995年因火山活动被废弃)的房屋。
Lava flows from Pu 'u 'o 'o were active but sluggish Sunday, according to the observatory.
据观测站说，周日，从Pu'uo ' o流出来的熔岩是活跃的但是流速缓慢。
In the upper right of the view pane, we see some high level summary information, including the number of intents and flows that are active.
在视图框的右上角，可以看到一些基本的摘要信息，包括意图数量、有效数据流数量等。
The tracing method in meshed transmission networks is applied to both active and reactive power flows.
潮流跟踪法应用于输电网的有功潮流分析和无功潮流分析。
An active queue management algorithm for flows called MBUE is proposed.
是一种面向数据流的活动队列管理算法。
This has an active guiding meaning in analysing the debris flows in engineering constructions.
对工程建设中的泥石流分析有着积极的指导作用。
It employs a policy of combining micro-flows monitoring and aggregated flows monitoring, and associating active measurement with passive measurement to reduce the system load.
该系统采取微流和汇聚流监测相结合，主动测量和被动测量相结合的策略，有效地降低了监测系统的负荷。
In addition, we also did a lot of works on detection and control on unresponsive flows, active queue management under router-supported environment.
此外，还对非响应流的检测和控制、路由器支持下的主动队列管理方法进行了研究。
A non-active perimeter region surrounds the active area, wherein no current flows through the non-active perimeter when the plurality of cells is biased in a conducting state.
环绕所述活性区域的非活性周界区，其中，当所述多个单元被偏置于所述导电状态中时没有电流流过所述非活性周界区；
Input current flows in the input lead of an active device or instrument.
注1流过有源器件或仪器输入引线中的电流。
Input current flows in the input lead of an active device or instrument.
注1流过有源器件或仪器输入引线中的电流。
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