A special four-core fiber has been designed and demonstrated, in which the internal distance between the neighbor cores is smaller.

设计了芯间距较小的特殊结构四芯光纤，可用于生成格子光场或用于制作光纤传感器。

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In other words, the fuel-cell powered car requires only half the fuel energy that the internal-combustion powered car does to go the same distance.

换句话说，行驶相同的距离，使用燃料电池发动机汽车只需要消耗内燃机汽车的一半能量。

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We solve these problems through a combination of shape keeping skeleton and the distance from each internal point to boundary.

我们通过结合保持物体形状的骨架和内部点到边界的距离解决了上述两个难题。

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Officials tried to stain the marbles brown again, put up a railing (which still survives) to keep the public at a decent distance, and held an internal inquiry designed to place blame on lowly members of staff with drinking problems.

ECONOMIST: Scraping the marbles

When the round is fired, the internal computer counts the number of rotations it makes, to calculate the distance flown.

ECONOMIST: Military technology

Between the blind-spot monitoring system, the active lane-keeping, the adaptive cruise control (maintaining a set distance to the vehicle ahead), and the "precollision" system, which uses internal cameras to monitor drivers' faces for signs of inattention, the GS350 is about as close to an automated auto as you'll find on the market.

WSJ: 2013 Lexus GS350 Review: Loaded With Everything but Thrills | Rumble Seat by Dan Neil