一项费力测量了整个非洲大陆上近7万棵树木周长的研究显示，热带森林吸收的碳排放比我们认识到的要多。
A laborious study of the girth of 70, 000 trees across Africa has shown that tropical forests are soaking up more carbon dioxide pollution that anybody realised.
而水上桩基工程相对陆上桩基工程而言，由于其桩中坐标一般无法预先在实地标定，故其测量定位过程相对复杂。
The aquatic pile foundation measurement is more complex than the land foundation measurement because the aquatic pile foundation can not be pre-calibrated in the field.
该系统主要用于陆上、海洋平台等方面的定向钻进，可以精确地了解钻头的航向，还可以测量钻头处的温度和磁场强度。
It is used to control the drilling direction of the land or offshore platforms. It can provide accurate drilling direction and measure the temperature and magnetic intensity around the drill.
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