<h3><span style="font-family: "STHeiti SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 18px; white-space: normal;">鼻窦，是鼻腔周围骨壁内的一些含气的腔，内表面覆以粘膜，借小孔通鼻腔。鼻旁窦有额窦、上颌窦、蝶窦和筛窦。鼻旁窦能温润空气，并对发音起共鸣作用。</span><br></h3> <h3>鼻旁窦：是鼻腔周围含气颅骨开口于鼻腔的含气空腔、腔内衬以粘膜并于鼻腔粘膜相移行。 额窦：开口于中鼻道的筛漏斗; 蝶窦：开口于蝶筛隐窝; 筛窦：前中筛窦开口于中鼻道，后筛窦开口于上鼻道 上颌窦：开口于中鼻道的半月裂孔<br></h3> <section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">“面罩唱法”</span></section><section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">其实是一种歌唱时的感觉<br style="max-width: 100%; overflow-wrap: break-word !important;"></span></section><section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">它是鼻窦、上颌窦、蝶窦的共鸣腔体</span></section><section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">同时打开唱通</span></section><section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">所达到的一种集中、明亮</span><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">且富有金属性的</span></section><section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">具有很强穿透力的歌唱声音</span></section><section style="max-width: 100%; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.60928px; white-space: normal; color: rgb(62, 62, 62); font-size: 15px; text-align: center; line-height: 2em; overflow-wrap: break-word !important;"><span style="max-width: 100%; letter-spacing: 1px; overflow-wrap: break-word !important;">也就是我们通常所说的“高位置歌唱”</span></section> <p class="ql-block"> “面罩”顾名思义，其部位在面部。确切地说，是上口盖上面的所有腔体：鼻窦、额窦、上额窦及额骨等。</p>