通过RS - 2 32与计算机进行通讯，可实现油管在地面水平放置时自然长度的在线测量。

The length can be measured on-line when the tubing is laid on the ground by the communication between the computer and RS-232.

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接下来他们必须决定一种“自然的”长度，他们选择了从赤道到北极距离的一千万分之一，他们将它称作一米。

Next they had to decide on a "natural" length. They chose one ten-millionth of the distance from the Equator to the North Pole.

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长度可达18米（60英尺）的北太平洋东部露脊鲸，数目远在50以下， 低于世界自然保护联盟作为一个可能存活物种的起码数量。

Numbering well under 50, the eastern North Pacific right whale --which can reach up to 18 metres (60 feet) in length -- falls below theIUCN's threshold of likely viability as a species.

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