靠水和产能比耗能多的熔化器启动的汽车,是发明者们幻想的主要产物。
Cars that run on water and fusion machines that generate more energy than they use are staples of inventors’ fantasy.
铱,通常被用于太空火箭,比铂金稀有十倍并且高度耐热,因此理论上即使它掉进岩浆中也不会熔化。
Iridium, usually used in space rockets, is ten times rarer than platinum and highly resistant to heat so theoretically it can be dropped it into lava, and it will not melt.
这种加热十分有效可以将物体质能的大致50%转化为辐射,如相对的核子熔化只能转化质能很少的百分比。
This heating is extremely efficient and can convert about 50% of the mass energy of an object into radiation, as opposed to nuclear fusion which can only convert a few percent of the mass to energy.
铅熔化的温度比别的金属低。
Lead will fuse at a lower temperature than some other metals.
这可用脲键比氨酯键有较好的相分离和较高的熔化温度来说明。
The results can be explained in terms of better phase separation and higher melting temperatures of the urea linkages over the urethane linkages.
找出国产榨辊比外国榨辊耐磨性低的原因主要是铸造与熔化水平低,铸件内在质量差造成的。
They have found a main reason of poor abrasion resistance of the first cane mill roller is due to its poor casting quality during melting and casting.
他们了解到,使用热或激光来熔化塑料三维打印机消耗的估计50至100倍的电能比注射成型,使相同的重量的目的。
They learned that 3D printers that use heat or a laser to melt plastic consumed an estimated 50 to 100 times more electrical energy than injection molding to make an object of the same weight.
他们了解到,使用热或激光来熔化塑料三维打印机消耗的估计50至100倍的电能比注射成型,使相同的重量的目的。
They learned that 3D printers that use heat or a laser to melt plastic consumed an estimated 50 to 100 times more electrical energy than injection molding to make an object of the same weight.
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