Authon use the photon as a particle which explain the wave phenomenon of the photon, and prove the photon carry the weak charge from the prism-photons chromatic dispersion and a circular hole -photon diffraction.
作者利用光的粒子性解释了光的波动现象，从三棱镜光的色散和园孔光的衍射证明了光带有微弱电荷。
The plasma arc generator comprises cathode, two anodes and insulating strip between two anodes, first anode is cylindrical hollow sleeve, the cylinder cathode is placed in the centre of said sleeve, and an annular fluid channel is formed between both the lower portion of first anode is equipped with a hole as fluid outlet, and second anode is a circular plate with central hole, between two anodes there is an insulating strip, the diameter of central hole of second anode is less than the diameter of lower hole of first anode.
本发明是一种串式多级压缩等离子弧发生器，由阴极、两阳极及阳极之间的绝缘片组成，第一阳极为圆柱形空心套管，圆柱体阴极处于该套管中心，并在两者之间形成环状流体通道，第一阳极下部是一个供流体出口的横截面为圆的孔，第二阳极是中心开孔的圆形板，两阳极之间有绝缘片，第二阳极中心孔的直径小于第一阳极下部孔的直径。
Wraps the bottom is a ring, the jacketed wall to the upward contraction tube, the tube cavity cross section diameter is equal to or be smaller than inward wraps the thermos pot bottom diameter, the jacketed wall upward pinch-out, interacts the part in a set of bottom and the jacketed wall, digs out some inclined half circular slot, wraps on the bottom to open 2-4 reservation spiral nail hole.
套底为一个圆环，套壁为向内向上收缩的筒，筒腔断面直径等于或小于所套热水壶壶底直径，套壁向上尖灭，在套底与套壁交结的部分，挖出一些倾斜的半圆槽，套底上开2—4个预留螺钉孔。
The wire winding wheel has one left disc with two sections of circular wall to form the power cable inlet and embedding opening and positioning hole in the peripheral of the shaft pipe; one right disc with central shaft pipe, positioning expansion pipe capable of being inserted into the positioning hole and circular wall in the same radius as that in the left disc; and one power cable winding shaft inserted into the circular walls to form one integral and with power cable inlet.
本发明在左内凹盘的反面圆台上相对位置突出2段弧形围壁，成为电源线导入口和对侧的嵌入豁口，轴管外围分设定位孔；右内凹盘反面圆台中央也突出轴管，其外围对应定位孔的位置上设置可插入孔内的定位胀管，环设的环围壁与左内凹盘的反面圆台上弧形围壁对应等径；嵌入围壁插入嵌入豁口而成为一体的设有电源线导入口的绕线轴。
It has the same movement rotated 90 degrees to mention only difference is that Jacket Ball Valve cock body is a sphere, a circular through-hole or channel through its axis.
它具有相同的旋转90度提动作，不同的是旋塞体是球体，有圆形通孔或通道通过其轴线。
The quantum size effect of a very small thickness circular disclike GaAs quantum dot on exciton's ground state binding energy and the electron-hole distance are studied by using calculus of variations.
利用变分法研究了有很小厚度圆盘形GaAs量子点模型中激子的基态结合能，及电子-空穴间距随量子点尺寸变化的规律。
Diamond saw blade, abrasive disc, T. C. T. circular saw blade, jig saw blade, reciprocating saw blade, hand hack saw blade, drill bit, hole saw, router bit, rotary carbide burr and power tools accessories.
上海恒辉工具有限公司 Shanghai Starcraft Tools Company Limited 2C42(W2C42)金刚石锯片，树脂砂轮片，硬质合金锯片，曲线锯，往复锯，各类手工锯条，各类钻头，各种材料的孔锯，木工铣刀，硬质合金旋转锉，电动工具附件组套等。
Its dark side are a circular hole money profiling and moire.
其鼓身有圆形的方孔钱纹和云纹。
The problems of the die occurred in piercing the non_circular hole in the curved surface of the box_shaped part were analyzed.
分析了在盒形件圆弧曲面上冲孔时模具出现的问题，筛选了比较合理的设计方案，介绍了避免粗长毛剌出现的凸模刃口形式和成功冲裁的模具结
When you need to cover when the hole is circular.
当需要覆盖的洞是圆形时。
Because the horizontal lathe craft scope is quite widespread, may in the turning the outer annulus cylinder, the circular conical surface, the ring channel, the solid of revolution formation surface, the turning end surface and each kind of commonly used metric system, the British system, the mold notational system, the pitch system thread, but also may carry on drills the center bore, the drill hole, the broaching, reams, work and so on tapping, wrap thread and knurling.
因为卧式车床的工艺范围相当广泛，可以车削内外圆柱面、圆锥面、环形槽、回转体成型面，车削端面和各种常用的公制、英制、模数制、径节制螺纹，还可以进行钻中心孔、钻孔、扩孔、铰孔、攻螺纹、套螺纹和滚花等工作。
The invention relates to an oil-gas well hard rock drilling tool and other drilling and tunneling tools, in particular to a through-type pneumatic down-the-hole hammer hole-bottom circular space powerful suction device.
本发明涉及一种油气井硬岩钻进及其它钻掘机具，尤其是贯通式风动潜孔锤孔底环状空间强力抽吸装置。
For the purpose of a contrast analysis, the author made three experimental beams, one was hexagon hole castellated beam and the other two were circular hole castellated beams.
为了做对比研究，笔者还制作了三根试验梁，其中一根六边形孔蜂窝梁和二根圆形孔蜂窝梁。
This paper give two reinforcement methods of the circular hole castellated beam-castellated beam with full-web extremity and castellated beam reinforced by transverse stiffeners.
提出了两种蜂窝梁的补强方法——端部实腹蜂窝梁和孔边设置横向加劲肋。利用AN SY S程序分析补强前后的圆孔蜂窝钢梁，得出端部实腹梁的受力性能优于设置横向加劲肋的梁的结论
Approximately 60 miles (100 kilometers) from Belize City, the almost perfectly circular Blue Hole is more than 1, 000 feet (305 meters) across and some 400 feet (123 meters) deep.
接近60英里（100公里）从伯利兹城，几乎是完整的圆形的蓝洞是超过1000英尺（305公尺）横径和约有400英尺（123米）深度。
Approximately 60 miles (100 kilometers) from Belize City, the almost perfectly circular Blue Hole is more than 1, 000 feet (300 meters) across and some 400 feet (120 meters) deep.
意译：大约距离伯利兹市60英里（100公里）几乎完美的圆形蓝色洞超过1000英尺（300米）横径和约有400英尺（120米）深。
In this paper, the method of small parameter is used to discuss the problems of stress concenration in the neighborhood of a concentrated load or a circular hole on a shallow shell of elliptic paraboloid.
本文采用小参数解法讨论了椭圆抛物面扁壳在集中荷载和圆孔附近的应力集中问题。所取的小参数为ε＝／这里Kx和Ky是沿x和y方向的曲率）。
Using the plane wave expansion method to deduce the propagation of light in a photonic crystal when the matrix eigen equation and its expression in the form of numerical solution of the circular air hole photonic crystal structure of the square and triangular photonic crystal structure of the dispersion curves of the different air...
利用平面波展开法推导出光在光子晶体中传播时的本征方程及其矩阵表达形式，数值求解了圆形空气孔结构的正方形光子晶体和三角形结构光子晶体的色散曲线，给出了不同空气。。。
Units owned many slicers, bed machine, drilling machine and a full set of plating equipment and quality control testing procedures, and in accordance with customer requirements, processing a variety of specifications for products, such as wafer, square, circular, tile-shaped head hole, special-shaped and so on.
拥有多台切片机、床机、打孔机及全套电镀设备和品质监控检测程序，并可根据客户要求设计，加工各种规格产品，如圆片、方形、环形、瓦形、沉头孔、异形等等。
It should be noted that at all times during operation the sheet metal blank 10 is held stationery while the cutting apparatus rotates about a circular path to cut a hole.
应该指出的是，在任何时候都在运作，金属薄板空白，10日举行的文具而切割器具绕圆形路径削减了一个洞。