triangle profile meaning in English

三角异形丝：

The results show that : ( a ) the influence of the groove shape on the low cut - off frequency is great at certain groove depth ; the high cut - off frequency is gradually lowered from triangle profile , cosine profile to swallow - tailed profile
结论为: ( 1 )槽深较大情况下,槽形状对截至频率影响较大,槽形状从三角形变化到燕尾形,截至频率依次降低。
The results show that : ( a ) the influence of the groove shape on the high cut - off frequency is great at certain groove depth ; the high cut - off frequency is gradually lowered from triangle profile , cosine profile to swallow - tailed profile
结论为：中文摘要（ 1 ）适当槽深情况下，槽形状对高截止频率影响较大；槽形状从三角形变化到余弦形直到燕尾形，高截止频率依次降低。