Through an experiment for free-form surface measurement, the approach is proven to be simple for parameter computation and its relative error for space length measurement is better than 0.56%.
通过对一自由曲面分块测量及数据拼接实验表明，这种方法参数求解简单，空间距离拼接相对误差优于0.56%。
It is designed with heavy workload and machined with high difficulty as its profile is a kind of free-form surface in space.
由于叶片的型面是一种空间自由曲面，因此设计工作量大、加工难度高。
Any free moving liquid in outer space will form itself into a sphere, because of its surface tension.
在外太空，任何液体都会形成球体，因为表面张力。
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