It also is creating a long term observation system to study the effects of climate change.

同时他们也正在建立一个长期观察系统来研究气候变化带来的影响。

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A scientist named Xie Wei says the whale fall might be quite recent and needs long-term observation (观察) .

一位名叫谢伟的科学家说，鲸落可能是最近才发生的，需要长期观察。

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Based upon finite element simulation analysis, load tests and long-term observation, a detection and evaluation system for old steel bridge safety was developed in this thesis.

本文以桥梁仿真分析技术为主线，以整治效果为目标，以荷载试验和长期观测为检验手段，建立了既有钢桥裂纹安全检测评估系统。

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Checking data collected at Brookhaven National Laboratory on Long Island and the Federal Physical and Technical Institute in Germany, they came across something even more surprising: long-term observation of the decay rate of silicon-32 and radium-226 seemed to show a small seasonal variation.

FORBES: Radioactive Decay Rates May Not Be Constant After All

The second interesting observation is that 7 out of 8 of the cyclical bull markets within the long term trend lasted for several years, and did not end until the market was back to its level achieved at the peak when the secular bear began.

FORBES: This Bull Market Could Hit Old 2000 Peak Before Ending