For soft tooth surface gear transmission, the hardness of the tooth surface should be selected
A: Pinion tooth surface hardnesslarge gear tooth surface hardness
B: Pinion tooth surface hardness≤large gear tooth surface hardness
A: Pinion tooth surface hardnesslarge gear tooth surface hardness
B: Pinion tooth surface hardness≤large gear tooth surface hardness
举一反三
- The tooth is usually divided into three parts ( ). A: Tooth crown B: Tooth neck C: Tooth surface D: Tooth root E: Tooth foot
- 以眼还眼，以牙还牙。 A: An eye for an eye and a tooth for a tooth. B: An eye for a eye and a tooth against a tooth. C: An eye for two eyes and a tooth for a tooth.
- tooth
- A tender tooth is ______.
- ______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface