Based on analyzing the knee joints of the four bar linkage, this paper presents the concepts of the stable well off angle, absolute and relative instantaneous distance.

对多轴膝关节进行了分析，提出了承重稳定裕度角、全伸展位绝对瞬心距和相对瞬心距的概念，用于评价下肢假肢的稳定性和相对稳定性。

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We think the Fed underestimates this linkage, in part by using the trade-weighted value of the dollar rather than the absolute value (the trade-weighted dollar mixes together changes in the dollar with changes in the value of foreign currencies).

FORBES: Third Quarter Strength, Stagflation Ahead