The idea of flying electric has lots going for it. An electric motor can deliver a huge amount of torque, or turning force, which is what gives electric cars such rapid acceleration, and is good for turning propellers, too. Electric motors do not need a gearbox, which reduces weight and mechanical complexity. This means less maintenance is required and there are fewer things to break—which is comforting in an aircraft. And if things do go wrong, there is no tank of fuel to rupture and explode.
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Or, if you’re self-employed, force yourself to work fewer hours each day –even if that means turning down new projects.
或者，如果你是个自由职业者，每天强迫自己少几个小时去工作——即使这意味着你拒绝了新计划。
Applying the concept of relative cutting velocity, the expression of velocity type dynamic cutting force and the mechanics model of chatter vibration in turning or boring process were advanced.
针对规避切削颤振问题，应用相对切削速度概念，提出了速度型动态切削力表达式以及车削或镗削的振动力学模型。
Or, if you're self-employed, force yourself to work fewer hours each day - even if that means turning down new projects.
或者，如果你是个自由职业者，每天强迫自己少几个小时去工作——即使这意味着你拒绝了新计划。
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