grade line limit 坡长限制
Mills start with a hard, strong construction grade wood like Douglas fir, and then preservative chemicals are injected under pressure to limit the effects of insect and rot damage.
米尔斯开始用硬，强固的构造像花旗松级木材，然后防腐剂化学品的压力之下，以限制昆虫和腐烂造成的损害减少注射。
Taking three-axle vehicle as an example, the calculation formula of parking grade limit of multi-axle vehicle is derived with its influencing factors analyzed.
以三轴汽车为例，推导出多轴汽车的驻车极限坡度计算公式，并对其影响因素进行分析。
In addition, a concept named utilization rate of grade limit is proposed as a supplement to the analysis indicators of parking braking performance.
另外，提出了极限坡度利用率的概念，作为对驻车制动性能分析指标的补充。
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