Taught in a group setting, these courses cover the basics of tree hazard assessment, line placement, ascending, descending and moving around in the canopy.
这门课程为团体教学，包含树木危险性评估、绳索放置、上升、下移、树木自由移动的基本知识。
Read on to learn how to choose the best tree for you, put it up straight without a struggle, and keep it fresh, fragrant, and hazard-free —plus, secrets to holiday cleanup and ornament storage.
读下去，你会学到如何挑选最好的圣诞树，还有如何放置它：直立起来，不能有半点倾斜；让树保持旺盛的生命力，能始终散发出松树特有的芳香；要让它远离任何可能的伤害——除此之外，本文还会告诉你一些假期之后如何清扫和布置装饰品的小窍门。
This paper summarizes the hazard, regularity and control technology of the rust disease of Malus micromalus tree in Hequ County.
就河曲县近年来海红果树锈病发生的危害、规律及防治技术进行了综述。
This paper puts forward a model for the appraisal of hazard degree of pollution origins in oilfield development which combines fault tree analysis and gray connection degree analysis.
针对油田开发污染源存在危险度，提出一种将灰关联度分析与故障树分析相结合的危险度评价模型。
Accident tree analysis is applied to risk analysis and a mathematical model is established, including fire model, effective release rate model, heat intensity threshold and hazard area equation.
采用事件树分析法进行风险分析并建立了数学模型，包括火灾模型、有效释放率模型、热强度极限值、危险区域等式四部分。
By logical diagnosis and fault tree analysis, the operational condition of 300 diesel engines was analysed and a fault tree model of diesel engines under hazard condition was established.
本文运用逻辑诊断和故障树分析法对300台柴油机的运转状态进行分析，建立柴油机运转危险状态故障树模型，求出在目前水平下危险状态发生的概率为0.000288；
The methodologies of WhatIf, Checklist, Hazard and Operability Study (HAZOP), Failure Mode and Effects Analysis (FMEA) or Fault Tree Analysis (FTA) are recommended.
推荐的安全分析方法有，如果…怎么样法、检查表法、危险与可操作分析法(HAZOP)、故障模式及后果分析(FMEA)或故障树分析法等。
The methodologies of WhatIf, Checklist, Hazard and Operability Study (HAZOP), Failure Mode and Effects Analysis (FMEA) or Fault Tree Analysis (FTA) are recommended.
推荐的安全分析方法有，如果…怎么样法、检查表法、危险与可操作分析法(HAZOP)、故障模式及后果分析(FMEA)或故障树分析法等。
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