有三齿的

American Huixin straight teeth casting ladle, brake inside the gear box, hard make and difficult to maintain; it's nut gear of the hand wheel, with three radial direction space accumulate, difficult to ensure accuracy; while circular motion, it's shaft direction moving, gear have friction slidding, easy agglutination.

美国回信的直齿浇包，制动器在齿轮箱里面，难制作难维修；他的手轮轴上的螺母齿轮，有三处径向间隙累加，难保证精度；在园周运动的同时，有轴向移动，齿轮有摩擦滑动，易胶合。

Another display shows the 1914 Yuan Shih Kai Dollar (Y329 type) with three different edges – with ordinary reeding, with a "Greek border" or alternating "T" design on the edge, and with a sort of "herring bone" design edge, in which curved, raised bars alternate with raised boxes.

另一个被展出来民国三年袁世凯头像壹圆（Y329 type，不知是啥，可能是PCGS的标识吧）也有三种不同的齿边，一种也是普通的刻槽直齿边，一种呢，是被称作"希腊边"的样式，也就是字母"T"上下交叉排列设计的的一种齿边样式②，第三种齿边样式有点类似於鲱鱼的骨头，末端呈弯曲的样子，凸起阴刻的线条连接著这些凸起末端弯曲的像隔栅线③。

The motor illustrated has three stacks and eight rotor teeth, so the step length is 15 degrees.

图示的发动机有三个防喷器组和八个齿状转子，其步长为15度。

The calculated results show that the X3+ cations each has two stable structures: the regular trigon(D3h) and the line with the regular trigon(D3h) being the ground state, while for three neutral X3Cl clusters, Sc3Cl has three stable isomers: the trigon-pyramidal(C3v), bidentate(C2v-1), and C2v-2 structures, Y3Cl and La3Cl each has only two stable isomers: the trigon-pyramidal(C3v) and bidentate(C2v-1) structures.

计算结果表明，三个X3+阳离子有两个稳定异构体：正三角型(D3h)和线型，其中正三角型为基态；对于三个中性的X3Cl团簇，Sc3Cl 有三个稳定的异构体：三角金字塔型(C3v)、双齿型(C2v-1)和 C2v-2型（图 1 e）；Y3Cl 和 La3Cl有2个稳定的异构体：三角金字塔型(C3v)和双齿型(C2v-1)。

The crystal consists of two similar but independent molecules in the asymmetric unit and the Ce ion coordinated toward ten donor atoms, six of which belong to the nitrogen atoms of two tridentate ligands and four oxygen atoms from two bidentate picrates.

晶体中一个不对称单元内有两个结晶学上独立的分子，这两个分子的构型基本相同，中心Ce3＋均与两个三齿配位的配体及两个双齿配位的苦味酸根配位，配位数为10。

In the composite family, having green or grayish foliage and usually numerous small discoid flower heads and including the mugwort, sagebrush, tarragon, and wormweed.

蒿属植物一种菊科蒿属的带香味的植物，有绿或浅灰色叶子，常有许多盘状花，包括艾蒿，三齿蒿，龙蒿和除虫草

Three-side teethed feather-like nanocomb structures of ZnO were produced based on a vapor-phase transport process.

样品的几何形状表现为一根主干和沿着主干三个对称方向上有纳米齿状阵列。

In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齿锥齿轮加工原理及切齿啮合过程中的啮合方程、产形轮齿面方程以及双圆弧弧齿锥齿轮的齿面方程，选用GB12759-1991型双圆弧齿轮基本齿廓为基准齿形，利用Unigraphics软件的建模功能，绘制了有较好适应性的双圆弧弧齿锥齿轮传动三维实体模型。其次，描述了应用有限单元法进行实体接触与碰撞问题算法的公式，研究了有限元分析中的各种接触类型以及双圆弧弧齿锥齿轮接触应力分析中所选择接触类型的依据。最后，通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包，将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件，给出一种新的加载方法，进行了双圆弧弧齿锥齿轮传动的接触应力的有限元分析。

Four vine-shielded soldiers, each with a vine shield in the left hand and a short knife in the right hand, engage four other soldiers who hold three-toothed forks, broad-bladed knives, spears or woolen sticks, and they take turns to fight according to the battle arrays.

四名藤牌兵左手执藤牌，右手执短刀，与四名攥三齿叉、大片刀、长矛或木棍者，按阵法轮番打斗；实战时藤牌阵法变化无穷，常见的有&一字长蛇阵&、&八卦连环阵&&梅花五方阵&&四门迷魂阵&&八门穿心阵&等，阵容可随实战需要扩大到成千上万人。

An insect resembling a member of the order Coleoptera.

三尖一种有三尖的器官或部分，尤指三尖齿

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。