Term 术语 Definition 定义
quadrantal correctors
象限偏差校正器
Masses of SOFT IRON placed near a MAGNETIC COMPASS to correct for QUADRANTAL DEVIATION. Spherical quadrantal correctors are called qua­dran... more
Masses of SOFT IRON placed near a MAGNETIC COMPASS to correct for QUADRANTAL DEVIATION. Spherical quadrantal correctors are called qua­drantal spheres.
为改正象限误差放在磁罗经附近的软铁片。球形的象限误差改正器称之为象限球。
quadrantal deviation
象限自差
See DEVIATION.
船首方向每改变大约90°,其符号也随之改变(东或西)的自差称为象限自差。这是由水平放置的软铁的感... more
船首方向每改变大约90°,其符号也随之改变(东或西)的自差称为象限自差。这是由水平放置的软铁的感应磁性所引起的。
quadrantal sphere
象限球
See QUADRANTAL CORRECTORS.
参见quadrantal corrections(象限偏差校正器)。
quadrature
方照,(上下)弦;90°相位差
An ELONGATION of 90° usually specified as east or west in accordance with the direction of the body from the SUN. The MOON is at quadrature... more
An ELONGATION of 90° usually specified as east or west in accordance with the direction of the body from the SUN. The MOON is at quadrature at first and last quarters. See PHASES OF THE MOON. The situation of two periodic quantities differing by a quarter of a CYCLE.
通常指天体在太阳之东方或西方90°的距角。月亮上、下弦即指处于方照。参见phases of the moon(月相)。 ... more
通常指天体在太阳之东方或西方90°的距角。月亮上、下弦即指处于方照。参见phases of the moon(月相)。 相差1/4周的两个周期量所处的位置。
quadripod
四角标
A four-legged stand for TRIANGULATION, SIGNALS, etc.
用于三角测量或觇标的四脚支架。
quality control
质量控制
All procedures which ensure that the product meets certain standards and specifica­tions.
使产品符合确定标准和规范的各种程序。
quality of the bottom
底质
See BOTTOM: NATURE OF.
参见nature of bottom(底质)。
quarantine anchorage
检疫锚地
An area where a vessel anchors when satisfying quarantine regulations.
为履行检疫法规而设置的船舶抛锚区域。
quarantine buoy
检疫浮标
A BUOY marking the location of a QUARANTINE ANCHORA­GE.
标示检疫锚地位置的浮标。
quarter-diurnal tide(s)
四分之一日潮
See TIDE.
在浅水区由正常潮汐变形所导致的潮汐,每日四次高潮和四次低潮。亦见shallow water tide(浅水潮汐)。
quartering sea
尾斜浪,尾侧浪
WAVES moving in a direction approxi­mately 45° from a vessel's HEADING, striking the vessel on the quarter.
与船只航向成近45°、击拍船只尾部的波浪。
quarter point
四分之一罗经点
The fourth of the distance from one POINT of the COMPASS to another, equivalent to about two DEGREES and forty-nine MINUTES.
罗经上一个罗经点到另一个罗经点的距离的四分之一,约等于2°49′。
quartz
石英,水晶
Crystalline silica. In its most common form it is colourless and transparent, but it takes a large variety of forms of varying degrees of op... more
Crystalline silica. In its most common form it is colourless and transparent, but it takes a large variety of forms of varying degrees of opaqueness and colour. It is the most common solid mineral. Part of the ocean bed is composed of quartz.
结晶硅石。一般无色透明,但形状各异,其透明度和色彩亦有很大差别。是最普通的固态矿物质,部分大... more
结晶硅石。一般无色透明,但形状各异,其透明度和色彩亦有很大差别。是最普通的固态矿物质,部分大洋底质是由石英组成的。
quartz clock
石英钟
See CLOCK: CRYSTAL.
参见crystal clock(石英钟)。
quartz horizontal magnetometer
石英水平磁力仪
See MAGNETOMETER.
由地球水平磁场施加在悬挂磁铁的扭矩被石英悬丝扭转360°时产生的扭矩所平衡的磁力仪。
quay
横码头
A WHARF approximately parallel to the SHORELINE and accommodat­ing ships on one side only, the other side being attached to the SHORE. It i... more
A WHARF approximately parallel to the SHORELINE and accommodat­ing ships on one side only, the other side being attached to the SHORE. It is usually of solid construction, as contrasted with the open pile construc­tion usually used for PIERS.
一种近似平行于岸线的码头,舰船只能在其一侧停靠,另一侧与海岸连接。构筑坚固,与那种码头式的桩... more
一种近似平行于岸线的码头,舰船只能在其一侧停靠,另一侧与海岸连接。构筑坚固,与那种码头式的桩基结构不同。
quayage
岸壁
A comprehensive term embracing all the struc­tures in a PORT along­side which vessels can lie.
泛指港湾内供船舶停靠的所有构筑物。
quenching
抑制,猝熄,衰减
The great reduction in underwater sound transmission or reception resulting from absorption and SCATTERING of sound energy by air bubbles en... more
The great reduction in underwater sound transmission or reception resulting from absorption and SCATTERING of sound energy by air bubbles entrap­ped around the sonar dome. See ATTENUATI­ON.
水下声发射和接收能力的大幅度减低,导致这种现象的原因是声纳室周围气泡的截留,使声能被吸收和散... more
水下声发射和接收能力的大幅度减低,导致这种现象的原因是声纳室周围气泡的截留,使声能被吸收和散射。参见attenuation(衰减)。
quicksand
流沙
A loose mixture of SAND and water that yields to the pressure of heavy objects. Such objects are difficult to extract once they begin sinkin... more
A loose mixture of SAND and water that yields to the pressure of heavy objects. Such objects are difficult to extract once they begin sinking.
沙与水的松散混合物,在重物压力下易沉陷,物体一旦开始下陷则很难拔出。
quintant
五分仪
A double-reflect­ing instrument for measuring angles. It is similar to a SEXTANT, but has an arc of 72°.
一种用于测角的双反射仪器,与六分仪相似,但分度弧长72°。