| 詞或詞組 | 中文 | 英文解釋中文解釋 |
|---|---|---|
| Kelvin (K) | 開(kāi)爾文（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). 國(guó)際單位制中熱力學(xué)溫度的基本單位。開(kāi)爾文溫度標(biāo)度在絕對(duì)零度和與攝氏度大小相同的度間隔（開(kāi)爾文）處有一個(gè)零點(diǎn)。水的冰點(diǎn)為273K（0oC），沸點(diǎn)為373K（100oC）。它先前被定義為水三相點(diǎn)熱力學(xué)溫度的分?jǐn)?shù)1/273.16。從2019年5月20日起，通過(guò)將玻爾茲曼常數(shù)kB的固定數(shù)值取為1.380649×10來(lái)定義?當(dāng)以等于kg·m2/（s2K）的單位J/K表示時(shí)。 |
| Kiln | 窯 |
An industrial oven for burning, baking, or drying. 用于燃燒、烘烤或干燥的工業(yè)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單位前綴；1千米是長(zhǎng)度單位，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）一種已被淘汰的（即非國(guó)際單位制）能量單位，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. 國(guó)際單位制中的基本質(zhì)量單位。它以前被定義為等于國(guó)際原型千克的質(zhì)量，一個(gè)高度和直徑為39.17毫米的右圓柱體，由90%（質(zhì)量）的鉑和10%的銥合金制成。從2019年5月20日起，普朗克常數(shù)h的固定數(shù)值被定義為6.626070150×10?34當(dāng)以單位J.s表示時(shí)，和kg.m2.s一樣。 |
| Kinetic energy | 動(dòng)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. 物體因運(yùn)動(dòng)而擁有的能量。它是賦予物體使其運(yùn)動(dòng)的能量。撞擊時(shí)，它被轉(zhuǎn)換成其他形式的能量，如應(yīng)變、熱、聲和光。 |
| Kinetic friction | 動(dòng)摩擦 |
(dynamic friction, sliding friction) (Unit N) The sliding resistance to relative motion of two surfaces in contact with each other. （動(dòng)摩擦，滑動(dòng)摩擦）（單位N）兩個(gè)相互接觸的表面相對(duì)運(yùn)動(dòng)的滑動(dòng)阻力。 |
| Knoop hardness test | 努氏硬度試驗(yàn) |
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. 使用校準(zhǔn)機(jī)器進(jìn)行的一種壓痕硬度試驗(yàn)，在規(guī)定條件下，將具有規(guī)定邊緣角的菱形棱錐金剛石壓頭壓入受試材料表面，并在移除荷載后測(cè)量長(zhǎng)對(duì)角線。其中壓頭是一個(gè)細(xì)長(zhǎng)的菱形棱錐，以平行四邊形的形式給出壓痕，其中較長(zhǎng)的對(duì)角線約為較短的七倍。用于研究固體材料的各向異性。 |
| Knot (kn) | 節(jié)（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. 非國(guó)際單位制單位，定義為每小時(shí)一海里。轉(zhuǎn)換為SI為1kN=5.144444×10?1米/秒。 |