Influence of the evolution of near-surface rail wheel microstructure on crack initiation by micro-bending investigations by a novel testing method in this field with high spatial resolution and acknowledge the importance of periodic reprofiling of the rail wheels in service... M Freisinger,A Traus...
句意:轮子的发明对世界产生了巨大的影响。 考查名词辨析。changes改变;importance重要性;affect影响,动词;effects影响,名词。根据“The invention of wheels had great…on the world.”可知,此处指的是“产生了巨大的影响”,应该用have effects on意为“对……有影响”,固定词组。故选D。反馈 收藏 ...
So wide and varied are the uses of wheels, in machines and vehicles of all kinds, that it is difficult to imagine what the world would be like without them. It is surprising to hear it said, therefore, that the wheel's importance will perhaps be greatly reduced by the end of the ...
One of these new lands became the United States of America. 其中的新地区之一变成了美利坚合众国。 The population of the United States is 309 milliom, making it the country with the largest number of native English speakers. 美国的人口有3.09亿,是...
I LEARNED to ride a cobalt blue, one-speed Schwinn on a humid summer day in the late '50s. The still air had encouraged even the bees to flee to shady bushes. My mother sat on the front porch talking to her sister, occasionally waving the morning paper like a fan, as if re...
The invention of wheels had great ___ on the world.A.changesB.importanceC.affectD.-e卷通组卷网
The wheel was one of man’s first inventions and yet it has also proved one of the most useful.So wide and varied are the uses of wheels, in machines and vehicles of all kinds, that it is difficult to imagine what the world would be like without them.It is surprising to hear it ...
So wide and varied are the uses of the wheels, in machines and vehicles of all kinds, that it is difficult to imagine what the world would be like without them. It is surprising to hear it said, therefore, that the wheel’s importance will perhaps be greatly reduced by the end of ...
So wide and varied are the uses of the wheels in machines and vehicles of all kinds that it is difficult to imagine what the world would be like without them. It is surprising to hear it said therefore that the wheel’s importance will perhaps be greatly reduced by the end of the ...
The importance of position has prompted many wind tunnel investigations into the main positions used by elite cyclists, which are depicted in Fig. 8. Table 4 shows the reported drag area and drag coefficients from the wind tunnel testing of cyclists in various positions. Overall wind tunnel inves...