north n. 诺斯〔姓氏〕。 n. 1.〔通常作 the north〕北,北方,北部。 2.〔N-〕英国北部;〔N-〕美国北部各州。 3.北半球;北极地方;〔诗〕北风; 〔N-〕(大都位于北纬度地区的)经济发达国家〔集合名词,统称“北”,相对于经济不发达的“南”而言,如“北南对话”即指此〕。 north by east [west] 北偏东[西]〔自正北偏东[西]11°15′〕。 in the north of 在…的北部。 on [to] the north of ... 在…的北面。 adj. 北的,北方的,北部的;朝北的;在北方的;从北方来的,位于北方的。 be too far north 〔俚语〕太伶俐,过于狡猾。 adv. 在北方,向北方;自北方。 due north 在正北。 lie north and south 纵贯南北。 north of 在…北方。 a room facing north 朝北方的房间。
Jt91 - 200 artillety gyro altazimuth is a fix instument which can research the grid north automatically and determine grid north azimuth at any direction . it works by making use of the physical features of gyro and influences of earth rotation . the equipment of this instument will play a important role in topographic clement Jt91 - 200型炮兵陀螺经纬仪是利用陀螺本身的物理特性和地球自转的影响,实现自动寻找其北方向和测定任一方向线的真北方位角的定向仪器。该型炮兵陀螺经纬仪的装备使用,对我军炮兵测地分队的测地保障发展将产生重大影响。
百科解释
Grid north is a navigational term referring to the direction northwards along the grid lines of a map projection. It is contrasted with true north (the direction of the North Pole) and magnetic north (the direction of the Magnetic North Pole).