拜托啦 各位高手。。。翻译下面这句话 物理专业的 不要机器翻译。。。

International practices have set the precise measurement of gravitational acceleration at sea level in 45 degree latitude of g=9.80665 metre／sec^2 to be the standard value for gravitational acceleration rate.

国际上将在纬度45°的海平面精确测得物体的重力加速度g=9.80665米／秒^2作为重力加速度的标准值
Internationally, the standard value of acceleration due to gravity g =9.80665 metre／sec^2 is measured prcisely for any object on sea level at 45 degrees latitude.

此翻译忠实于原意，请明鉴。
Internationally, the acceleration of gravity of an object, g=9.80665m／s 2 that is precisely measured at the sea level of latitude 45°is ragarded as the standard value of the acceleration of gravity

Internationally, the acceleration of gravity of a object, g=9.80665m／s 2 that is precisely measured at the sea level of latitude 45°is ragarded as the standard value of the acceleration of gravity