他们的迅速到来出乎我的意料之外。
The method features speediness, exactness , impersonality , and non - invasion to the sample.该法具有快速、 准确、 客观和不损坏样品等特点。
To a ship with good speediness, the performances of ship, main engine, and propeller must match each other.快速性良好的船舶应使得船、主机和螺旋桨之间的性能综合匹配。