concave downward造句

"concave downward"是什么意思

造句与例句手机版

In some, there is no bow at all, the entire cymbal is in the shape of a concave downwards cymbal bell, similar to the earliest examples.
This is because the concavity changes from concave downwards to concave upwards and the sign of " f "'( " x " ) does not change; it stays positive.
It's difficult to see concave downward in a sentence. 用concave downward造句挺难的

相邻词汇

用"concave diffraction grating"造句, 用"concave disc"造句, 用"concave disk"造句, 用"concave disk colter"造句, 用"concave down"造句, 用"concave downwards"造句, 用"concave edge"造句, 用"concave face"造句, 用"concave faces"造句,

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