1. 三和弦：这是一个很有趣的现象,三和弦(triad)的命名是由于它有三个音,而七和弦(seventh)以及后面的所有其它和弦都是以它们的最大音程命名的. 我们现在常用的大小调是经过长时期的筛选和优化的结果,在这之前的中世纪时期,比较流行的有七种调式,

2. triad

2. 三分体：在两个肌浆网间有三分体(triad)结构,包围着肌原纤维,如果从肌原纤维的轴以直角作成断面,则呈网眼状,总起来称T系统(T system). 肌纤维兴奋发生活动电位时,它传给直接开口于膜的T管,到达肌浆网,放出Ca. 如果将肌肉用甘油温和地处理一下,

3. 三合一：这不比偏见(bias)更好第四正面密度的紫罗兰光芒将被染上(tinged)绿色, 蓝色, 靛蓝色 三合一(triad)能量. 这个色调可以看做是彩虹或三棱镜(prism)的一部份 各个光芒相当地显著(distinct).第四负面密度的紫罗兰光芒, 容我们说,

4. 三联体：位于横小管两侧的肌质网扩大呈环形的扁囊,称终池(terminal cisternae),与横小管一起共同组成三联体(triad)(图6-9),可将兴奋从肌膜传到肌质网膜. 肌质网的膜上有丰富的钙泵(一种ATP酶),有调节肌质中Ca2+浓度的作用.

1. 三合会(旧中国秘密组织)
    The Triads were Chinese secret societies in old China.

    e.g. …gangs, known as the Triads.
           称作“三合会”的帮派

2. 三个一组;三件一套;三位一体
    A triad is a group of three similar things.

triad

    e.g. For the faculty, there exists the triad of responsibilities: teaching, research, and service.
           教员要承担三重责任:教学、研究与服务。

1. a three-note major or minor chord
    a note and its third and fifth tones

    Synonym: common chord

2. three people considered as a unit

    Synonym: triothreesometrinity

3. a set of three similar things considered as a unit

    Synonym: triotriplettriple

4. the cardinal number that is the sum of one and one and one

    Synonym: three3IIItriothreesometierceleashtroikatrinetrinityternaryterniontriplettercetterzettotreydeuce-ace