单词	valley dam
释义	valley dam 河谷坝
随便看	phase-reversal coding phase reversal coding phase reversal keying phase reversal modulation phase-reversal modulation phase-reversal protection phase reversal protection phase reversal relay phase-reversal relay phase reversal transformer phase-reversal transformer phase reverser phase-reversing connection phase reversing switch phase roll phase rotation phase rotation circuit phase rotation indicator phase rotation (phase squence) phase rotation relay phase-rotation relay phaserotation relay phase rotator phaser-reference alternator phasers 敻敼敽敾敿斀斁斂斃斄三角儿馒头三角头三角头儿三角对抗赛三角枫三角火烧三角皮带轮三角短裤三角肌三角酸