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How Wind Turbines Adjust Blades to Maximize Energy Capture
风力发电机如何调节叶片以最大化能量捕获
精读先不看文字,完整听一遍。
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Turbine blades pivot on hinges called pitch bearings, allowing precise angle adjustments during operation.涡轮叶片通过称为变桨轴承的铰链转动,从而在运行中实现精确的角度调节。
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Sensors measure wind speed and direction every second, feeding data to the control system.传感器每秒测量风速和风向,并将数据传送给控制系统。
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At low winds, blades face fully into the flow; at high winds, they feather slightly to limit rotation speed.低风速时,叶片完全迎风;高风速时,叶片轻微顺桨以限制转速。
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This prevents mechanical stress and protects generators from overload or damage.这可防止机械应力,并保护发电机免受过载或损坏。
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Yaw motors rotate the entire nacelle to keep blades aligned with shifting wind directions.偏航电机带动整个机舱旋转,使叶片始终对准变化的风向。
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Computational fluid dynamics simulations help engineers shape blade profiles for optimal lift-to-drag ratios.计算流体动力学仿真帮助工程师优化叶片型线,以获得最佳升阻比。
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Grid operators request curtailment during surplus supply, so turbines can feather completely to stop spinning.电网运营商在电力过剩时要求限电,此时风机可完全顺桨停转。
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Every adjustment balances energy yield, equipment longevity, and grid stability intelligently.每次调节都智能地平衡发电量、设备寿命与电网稳定性。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- This prevents mechanical stress and protects generators from overload or damage. 这可防止机械应力,并保护发电机免受过载或损坏。
- Every adjustment balances energy yield, equipment longevity, and grid stability intelligently. 每次调节都智能地平衡发电量、设备寿命与电网稳定性。
- Computational fluid dynamics simulations help engineers shape blade profiles for optimal lift-to-drag ratios. 计算流体动力学仿真帮助工程师优化叶片型线,以获得最佳升阻比。
④ 懂 · 选一选
⑤ 今天会说这一句
This prevents mechanical stress and protects generators from overload or damage.
⑥ 跟读并录音
This prevents mechanical stress and protects generators from overload or damage.
第一版:录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达,自己说一句。
例子:This prevents mechanical stress and protects generators from overload or damage.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中,敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课,可以去陈老师带读社(和自学通行不是同一份会员)。
课程开发中,敬请期待。