Multiple conveyor belts are equipped with gears and rack units which can quickly adjust the left and right positions of the belt.

多条输送皮带都装有齿轮和齿条装置，可快速调整皮带的左右位置。

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The rail assembly includes a pair of extendable rails, a rack, pinions, and restricting units.

所述轨道组件包括一对可伸出的轨道、齿条、小齿轮以及限制单元。

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The force conditions of the chain on a chain drive pumping unit without reverse rack are much more favorable than that on conventional chain drive pumping units, and can be well controlled.

无换向架链条抽油机的链条承受的总拉力为悬点载荷与平衡重的差值加连杆对链条的水平分力在链条上形成的附加拉力之和，受力状况优于普通链条抽油机，且能得到控制。

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By 2016 management is projecting it will have 230 Rack units.

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The ramp-up of Rack openings is impressive with 24 units slated to open this year and probably 30 to 40 units each year thereafter.

FORBES: Nordstrom: An Impressive Growth Outlook for a Unique Retailer

The collection of 44 wooden and ceramic pieces (still unpriced) includes a wooden-framed, weightless basin, freestanding storage units, stools and even a plant rack.

WSJ: Splish, Splash, Homes Take to the Bath