| 词或词组 | 中文 | 英文解释中文解释 |
|---|---|---|
| Kelvin (K) | 开尔文（K） |
The SI unit of temperature. The Kelvin temperature scale has a zero point at absolute zero and degree intervals (kelvins) the same size as degrees Celsius. The freezing point of water occurs at 273K (0ºC) and the boiling point at 373 K (100ºC). The base unit of thermodynamic temperature in the SI system. It was previously defined to be the fraction 1/273.16 of the thermodynamic temperature of the triple point of water. From 20 May 2019 it has been defined by taking the fixed numerical value of the Boltzmann constant kB to be 1.380 649 × 10−23 when expressed in the unit J/K, which is equal to kg.m²/(s²K). 国际单位制中热力学温度的基本单位。开尔文温度标度在绝对零度和与摄氏度大小相同的度间隔（开尔文）处有一个零点。水的冰点为273K（0ºC），沸点为373K（100ºC）。它先前被定义为水三相点热力学温度的分数1/273.16。从2019年5月20日起，通过将玻尔兹曼常数kB的固定数值取为1.380649×10来定义−当以等于kg·m²/（s²K）的单位J/K表示时。 |
| Kiln | 窑 |
An industrial oven for burning, baking, or drying. 用于燃烧、烘烤或干燥的工业烤箱。 |
| Kilo (k) | 千（k） |
An SI unit prefix indicating a multiplier of 103; thus kilometre (km) is a unit of length equal to one thousand metres. 表示乘法器103的SI单位前缀；1千米是长度单位，等于1000米。 |
| Kilocalorie | 千卡 |
(Cal, kg-cal, kilogram-calorie, large calorie) An obsolete (i.e. non-SI) unit of energy equal to 1 000 cal. （卡，千克卡，千克卡路里，大卡路里）一种已被淘汰的（即非国际单位制）能量单位，等于1000卡。 |
| Kilogram (kg) | 千克（kg） |
The base unit of mass in the SI system. It was previously defined as being equal to the mass of the International Prototype Kilogram, a right cylinder of height and diameter 39.17 mm made of an alloy of 90% (by mass) platinum and 10% iridium. From 20 May 2019 it has been defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 150 × 10−34 when expressed in the unit J.s, which is equal to kg.m².s. 国际单位制中的基本质量单位。它以前被定义为等于国际原型千克的质量，一个高度和直径为39.17毫米的右圆柱体，由90%（质量）的铂和10%的铱合金制成。从2019年5月20日起，普朗克常数h的固定数值被定义为6.626070150×10−34当以单位J.s表示时，和kg.m².s一样。 |
| Kinetic energy | 动能 |
Energy that an object possesses because it is in motion. It is the energy given to an object to set it in motion. On impact, it is converted into other forms of energy such as strain, heat, sound and light. 物体因运动而拥有的能量。它是赋予物体使其运动的能量。撞击时，它被转换成其他形式的能量，如应变、热、声和光。 |
| Kinetic friction | 动摩擦 |
(dynamic friction, sliding friction) (Unit N) The sliding resistance to relative motion of two surfaces in contact with each other. （动摩擦，滑动摩擦）（单位N）两个相互接触的表面相对运动的滑动阻力。 |
| Knoop hardness test | 努氏硬度试验 |
An indentation-hardness test using calibrated machines to force a rhombic-based pyramidal diamond indenter having specified edge angles, under specified conditions, into the surface of the material under test and to measure the long diagonal after removal of the load. An indentation hardness test in which the indenter is an elongated diamond pyramid that gives an impression in the form of a parallelogram, in which the longer diagonal is about seven times the shorter. Used for studies of anisotropy in solid materials. 使用校准机器进行的一种压痕硬度试验，在规定条件下，将具有规定边缘角的菱形棱锥金刚石压头压入受试材料表面，并在移除荷载后测量长对角线。其中压头是一个细长的菱形棱锥，以平行四边形的形式给出压痕，其中较长的对角线约为较短的七倍。用于研究固体材料的各向异性。 |
| Knot (kn) | 节（kn） |
A non-SI unit defined as one nautical mile per hour. The conversion to SI is 1 kn = 5.144 444 444×10−1 m/s. 非国际单位制单位，定义为每小时一海里。转换为SI为1kN=5.144444×10−1米/秒。 |