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gnomonic 音标拼音: [nom'ɑnɪk] 指时针 指时针 Gnomonic \ Gno* mon" ic\, Gnomonical \ Gno* mon" ic* al\, a. [ L. gnomonicus, Gr. ?: cf. F. gnomonique. See { Gnomon}.] Of or pertaining to the gnomon, or the art of dialing. [ 1913 Webster] { Gnomonic projection}, a projection of the circles of the sphere, in which the point of sight is taken at the center of the sphere, and the principal plane is tangent to the surface of the sphere. " The gnomonic projection derives its name from the connection between the methods of describing it and those for the construction of a gnomon or dial." -- Cyc. of Arts & Sciences. [ 1913 Webster]
Projection \ Pro* jec" tion\, n. [ L. projectio: cf. F. projection.] [ 1913 Webster] 1. The act of throwing or shooting forward. [ 1913 Webster] 2. A jutting out; also, a part jutting out, as of a building; an extension beyond something else. [ 1913 Webster] 3. The act of scheming or planning; also, that which is planned; contrivance; design; plan. -- Davenant. [ 1913 Webster] 4. ( Persp.) The representation of something; delineation; plan; especially, the representation of any object on a perspective plane, or such a delineation as would result were the chief points of the object thrown forward upon the plane, each in the direction of a line drawn through it from a given point of sight, or central point; as, the projection of a sphere. The several kinds of projection differ according to the assumed point of sight and plane of projection in each. [ 1913 Webster] 5. ( Geog.) Any method of representing the surface of the earth upon a plane. [ 1913 Webster] { Conical projection}, a mode of representing the sphere, the spherical surface being projected upon the surface of a cone tangent to the sphere, the point of sight being at the center of the sphere. { Cylindric projection}, a mode of representing the sphere, the spherical surface being projected upon the surface of a cylinder touching the sphere, the point of sight being at the center of the sphere. { Globular}, { Gnomonic}, { Orthographic}, { projection}, etc. See under { Globular}, { Gnomonic}, etc. { Mercator' s projection}, a mode of representing the sphere in which the meridians are drawn parallel to each other, and the parallels of latitude are straight lines whose distance from each other increases with their distance from the equator, so that at all places the degrees of latitude and longitude have to each other the same ratio as on the sphere itself. { Oblique projection}, a projection made by parallel lines drawn from every point of a figure and meeting the plane of projection obliquely. { Polar projection}, a projection of the sphere in which the point of sight is at the center, and the plane of projection passes through one of the polar circles. { Powder of projection} ( Alchemy.), a certain powder cast into a crucible or other vessel containing prepared metal or other matter which is to be thereby transmuted into gold. { Projection of a point on a plane} ( Descriptive Geom.), the foot of a perpendicular to the plane drawn through the point. { Projection of a straight line of a plane}, the straight line of the plane connecting the feet of the perpendiculars let fall from the extremities of the given line. [ 1913 Webster] Syn: See { Protuberance}. [ 1913 Webster] [ 1913 Webster]
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- 赛龙舟(英文讲解) - 知乎
龙舟大赛是中国传统节日端午节的必备传统庆祝形式,那我们要怎么用英语给别人介绍呢?一起来看看吧
- 为什么叫端午节? - 知乎
端午节 名称来历:"端"字有"初始"的意思,"午"有两层意思,一是指,二是指午,五指五日,因此"端午"即端五,就是"初五",午指午月,而按照历法,五月正是"午"月,因此"端午"又是五月初五的意思。五月是一年 中,古代历法曾经以冬至为新年,初五是一个节气第一候,这天阳气最旺,是驱阴毒的
- 端午节的手工怎么做简单又漂亮 - 百度经验
最后将剪下的小粽子粘贴固定在龙舟背部,这样端午节的手工就制作完成了。
- 戴五彩绳有什么作用 - 百度经验
戴五彩绳有什么作用,端午节除了吃粽子、赛龙舟,民间还有端午节戴五彩线的风俗,也是端午节比较重要的习俗,那么,你
- 端午节都有些什么活动呢? - 知乎
端午节的活动非常丰富多彩,主要活动包括赛龙舟、吃粽子、挂菖蒲和艾叶、佩香囊等。赛龙舟是端午节最具特色的活动之一,人们划着装饰精美的龙舟在水面上竞渡,以此来纪念屈原的英勇事迹。吃粽子也是端午节的重要习俗之一,粽子是用糯米和各种馅料包裹成的,形状和口味各异,寓意着团圆
- 端午节午时水的作用 - 百度经验
端午节此天可以用午时水,放入煎蒲、艾等香草洗澡,这样可以提升健康运,去邪气。
- 为什么端午和中秋是除过年外我们最重视的节日? - 知乎
这得有个时效性,古时候端午并不是最重视的。甚至于如果不是最近某些年一直有媒体告诉你端午是我们最重视,你是不会问出这个问题的。 端午为什么成为了现在媒体很重视的节日?无他,屈原成了爱国主义的代表罢了。其他细节,我就不多说了。端午本是夏至,夏至晚间有飞龙在天,是祭龙日
- 五彩绳不戴了怎么处理 - 百度经验
五彩绳不戴了怎么处理,端午作为我国传统节日之一,每当节日到来之际,人们都会以自己的方式进行庆祝,比如佩戴五彩绳。那么用过的五色绳怎么处理?下面来简单介绍一下!
- 端午节来源真的是和屈原故事有关吗? - 知乎
端午节的起源传统上与屈原的故事有关,但实际上,端午节的起源具有多元性,并不仅仅与屈原有关。 1 **屈原的故事**: 屈原是战国时期楚国的大臣和诗人,他因政治上的失意而自沉汨罗江。为了纪念他,传说人们在他投江的那一天,也就是五月初五,划龙舟、投粽子,以防止鱼虾吃掉他的身体
- 端午节的蛋兜怎么做 - 百度经验
将线剪成8段,每段40cm。这就是蛋兜的经线,数量没有严格规定,为了图吉利,我剪了8段,刚好也合适。 线越多,编织的网格就越密。长度尽量留长点,多余可以剪掉,我编第一只就是因为留短了,匆匆收了。
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