Traditional structure light sensor fixes a laser projector and CCD sensors on its nicety back, which limits its survey area.

传统点结构光传感器将激光器和CCD传感器固定在精密背架上，限制了其测量范围。

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The new type of rocks such as the residuum of magnetite quartzite, trachyte porphyry, marble and sodaclase are found in the survey area.

测区内发现磁铁石英岩残留体、粗面斑岩、大理岩、钠长岩等新岩石类型。

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In a certain given gravity survey area, it is unreasonable to use the united density value to calculate the Bouguercorrection values of the whole area.

特定的重力勘探区，用统一的密度作布格外部改正有一定的不合理性。

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His office said the increase in land discovered to be under cultivation came about because the survey area had been increased, in an attempt to improve its comprehensiveness.

BBC: NEWS | Americas | Coca-growing spreads in Colombia

However, the survey area was expanded in 2005 by 81%.

BBC: NEWS | Americas | Coca-growing spreads in Colombia

The team says it did not have nearly enough time during its expedition to survey the area completely and intends to return later in the year.

BBC: NEWS | Science/Nature | Science team finds 'lost world'