sloping down rather steeply 同义词：downhill, downward-sloping,
例句与用法
1.
The multi - work condition declivitous impact testing system was introduced which has variable impacting angle , rigidity , and length of stroke , and has elastic booster to increase impacting intensity 摘要论述了多工况斜面冲击试验新系统，具有碰撞角度和壁障刚度可调，斜面冲程和冲击角度可选，并装有弹性助力系统以提高冲击强度等特点。
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