This paper introduces an optimal method for designing the weight-balance system of the four-link luffing mechanism.

本文介绍了一种四连杆变幅机构平衡重系统的优化设计方法。

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Four-link portal crane using the best combination of optimized boom system, with horizontal small gap, amplitude stable, low power consumption.

四连杆门座式起重机采用最佳优化的组合臂架系统，具有水平落差小、变幅平稳、功耗低的特点。

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The paper analyzes the faults of four-link sealing device and introduces the structure and characteristics of all-metal flexible magnetic sealing.

分析了烧结机头尾密封四连杆密封装置存在的缺陷，介绍了全金属柔磁密封的结构和特点。

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For added network safety, the Cloud Storage 4000 features the D-Link Surveillance Station App, which supports recording and playback of up to four IP cameras, such as D-Link's award-winning line-up of mydlink enabled cloud cameras.

ENGADGET: D-Link Cloud Storage 4000 NAS stores up 16TB, hooks up to your smartphone and tablet

The Rolls-Royce Ghost rides on a sophisticated double wishbone suspension up front with a multi-link array at the rear and automatic damping height-adjustable shock absorbers at all four corners.

FORBES: Rolls-Royce Ghost Review: The Spirit is Willing

As Bolor Minjin, Robert Painter, and the rest of the Mongolia contingent watched, elated, from behind a chain-link fence, Homeland Security Investigations agents loaded four large crates onto the truck.

NEWYORKER: Bones of Contention