This is the basic operating principle of many thermostats.这是许多恒温箱的基本工作原理.Thermostats can be used to regulate the temperature of a room.恒温器可用来调节室内温度.Some thermostats are too sensitive and easily vibrated.有些定温器太灵敏,也容易振动....
湿心材比例为60%~68%,且随着栽植密度的减小而增大.The wetwood proportion ranged from negative relationship with the planting density.重硬且心材呈浓色者可供作木艺品制造用.Heavy wood with dark colored heartwood used for ornaments.心材暗红褐至紫褐色, 具深浅交替条纹.Heartwood fro...
相对来说几乎不产生放射尘和污染源的.Producing relatively little radioactive fallout or contamination.放射尘导致了朗格拉普岛的居民出现了怪胎 、 亢等多种疾病.The radioactive fallout caused abnormal births , thyroid problems , and other illnesses among Rongelap'...