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【導(dǎo)讀】3．?dāng)?shù)控機(jī)床的導(dǎo)軌主要有（滑動(dòng)）、（滾動(dòng)）、（靜壓）三種。4．?dāng)?shù)控機(jī)床的類(lèi)別大致有（開(kāi)環(huán)）、（閉環(huán)）、（半閉環(huán)）。5．按車(chē)床主軸位置分為（立式）和（臥式）。院）合作研究的（三）坐標(biāo)（數(shù)控銑）床。7．?dāng)?shù)控電加工機(jī)床主要類(lèi)型有和。9．合適加工中心的零件形狀有（平面）、（曲面）、（孔）、（槽）等。11．常用夾具類(lèi)型有（通用）、（專(zhuān)用）、（組合）。13．基點(diǎn)是構(gòu)成輪廓的不同幾何素線的（交點(diǎn)）或(切點(diǎn))。14．加工程序單主要由(程序體)和(注釋)兩大部分構(gòu)成。15．自動(dòng)編程又稱(chēng)為。兩種，我國(guó)采用的標(biāo)準(zhǔn)是。22．在數(shù)控加工中，刀具刀位點(diǎn)相對(duì)于工件運(yùn)動(dòng)的軌跡稱(chēng)為(加工)路線。B、又稱(chēng)動(dòng)態(tài)精度檢驗(yàn)，是在空載條件下;
【正文】 time for him. “ Can you believe that?” asked McVay, who smiled and shook his head while recalling the conversation Friday during a break from practice. “He actually thought I’d be too busy for him. You always make time for guys like him.” Jason Reid is a sports columnist with the Washington Post. He joined the Post’s Redskins team in 2020 after 15 years covering many beats at the Los Angeles Times. View Archive Google+ Especially if you’re an assistant coach who hopes to remain employed. Coach Jay Gruden has big plans for the young tight end, whose bination of size, speed — he’s listed at 6 feet 2, 237 pounds and covers the 40yard dash in seconds — and route running make him a major matchup problem for defenses. And with deepthreat wide receiver DeSean Jackson often expected to draw double teams, Reed and others in the Redskins’ receiving corps should benefit from single coverage. No one needs to tell Gruden how to best use Reed. However, if Gruden ever has a question about Reed, he can call on McVay, who knows him better than anyone in the anization. The work they did together last fall could help Reed blast off this year. From the start, they developed a model coachplayer relationship. “He’s o bv iously a great player, but I really enjoy him as a person, too,” McVay said. “He’s a great guy, so you want to continue to be involved with him.” Generally, head coaches are father figures, disciplinarians. Position coaches are supposed to be like big brothers. The best skillfully walk the line of being a supervisor, teacher and friend. They’re the ones in whom players usually confide. During threeplus seasons coaching Redskins tight ends, McVay had a good rapport with all players who reported to him. He took pride in working hard and being honest, 好文檔，好分享，僅供參考 14 figuring that’s the best way to lead. For that, he earned the players’ respect. A thirdround selection from Florida in the 2020 draft, Reed quickly learned that McVay had his back. Whatever he needed — another question answered in the meeting room, extra work after practice or a quick tip on the sideline during games — McVay delivered way before Reed ascended to the top of the depth chart. Some assistants attempt to latch onto fastrisers, hoping to advance their careers, and ignore the players at the bottom of the roster, but “Coach McVay always tries to help everybody,” Reed told me recently. “You know if he says something, he means it.” Reed peppered McVay with questions about every aspect of playing tight end in the NFL, his role in the Redskins’ offense and what he could do to improve. Although Reed began the season as the thirdstring tight end behind veterans Fred Davis and Logan Paulsen, coaches and players privately raved about the big plays he made in closed practices. It only was a matter of time, many said, before Reed supplanted Davis as the starter. Davis accelerated the process by continuing to be a knucklehead— you can’t repeatedly fall asleep in meetings and then plain about how you’re being used — and it became clear Reed was too good to remain on the sideline. When it es to wood preference for their bats, players know what they like and don’t like. Some swear by one type of wood. Others use multiple kinds. Their explanations for why maple is better than ash, or yellow birch is better than maple, or whatever their preferences, are rooted in perception, researchers said. In the case of wood, perception isn’t reality. Perception When catcher Jose Lobaton was in Class AAA, someone told him he should use a yellow birch bat because it hardens with each impact. After Lobaton joined the Nationals, fellow catchers Wilson Ramos and Sandy Leon convinced Lobaton to try a maple bat.
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