
| Lĩnh vực: xây dựng |
| Lĩnh vực: vật lý |
| Lĩnh vực: y học |
| Lĩnh vực: hóa học & vật liệu |
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[bɔ:l]
o quả cầu nhỏ, hình cầu
o bi, cầu
§ coal ball : cầu than
§ lava ball : cầu dung nham
§ lock ball : bi khoá, bi chốt
§ sulphur ball : kết hạch sunfua sắt trong than
§ valve ball : bi van
§ ball joint : khớp cầu
Khớp giữa hai chi tiết thiết bị có thể quay nhờ khớp cầu.
§ ball pump : bơm bi
Hệ thống làm dâng khí bằng cách bơm những bi cao su tổng hợp vào phần dưới ống khai thác để tách biệt các pha lỏng và khí.
§ ball race : vòng ổ bi, vòng ổ trục
§ ball sealers : bi đáy lỗ
Các bi bọc cao su cứng bằng nilon, nhôm hoặc chất dẻo dùng để bít các lỗ bắn đạn thủng trong giếng.
§ ball valve : van cầu
§ ball-and-seat valve : van bi
Loại van dùng một viên kim loại nhẵn bóng và một lỗ hở chỉ cho phép chất lỏng chảy theo một chiều.
§ ball-bearing : (kỹ thuật) ổ bi, bạc đạn
Loại kết cầu có bi thép rắn dùng để chuyển ma sát trượt thành ma sát lăn.
Xem thêm: musket ball, globe, orb, testis, testicle, orchis, ballock, bollock, nut, egg, Ball, Lucille Ball, clod, glob, lump, clump, chunk, formal
ball noun costume, fancy dress, masked
1 round object in games We're going to a masked ball.
ADJ. billiard, cricket, golf, rugby,
VERB + BALL have, hold, organize tennis, etc. | beach | match, We're organizing a charity ball. | practice attend, go to
VERB + BALL play with | bat, blast,
BALL + NOUN gown bounce, bowl, chip, dribble,
ADJ. at a/the ~ She met him at head, hit, kick, roll, strike, throw The kids love to kick a ball against my wall.the college ball. | clear, cross, pass | catch, stop He caught the ball. | control, trap | chase She chased the ball all over the pitch. | retrieve, run down | return The fielders try to retrieve the ball quickly and return it to the bowler. | miss The goalkeeper missed the ball. | drop, let go of Oh no! He's dropped the ball. | handle | give away, lose | win | retain
BALL + VERB fly, go, roll, sail The ball flew over the bar into the sea of Middlesbrough fans. The ball's gone over the fence. | hit, land The ball hit the wall and rolled along the road. | bounce, rebound
BALL + NOUN game | control, skills His ball control was excellent. > Special page at SPORT
2 kick/hit of a ball
ADJ. good, great, superb | bad, loose | high, low He sent over a high ball. | long, short | quick, slow | cross, through a superb through ball from John Scott | hand He was penalized for hand ball.
VERB + BALL play, send | pick up, pounce on, punish He pounced on a loose ball and scored.
PREP. ~ from a great ball from Beckham
3 round object like a ball
ADJ. tight | fiery The sun was a fiery ball, low on the hills. | crystal (= used for telling fortunes) Without a crystal ball it's impossible to say where we'll be next year. | cannon, musket
VERB + BALL curl/roll (up) into The little girl curled up into a ball in her mother's arms. | form/make sth into, roll/screw sth (up) into, shape sth into He screwed the letter up into a tight ball.
PHRASES a ball of fire/flame, a ball of string/wool
PHRASES a ball and chain (figurative) The responsibility was a ball and chain around my ankle.
3 party
ADJ. college, charity, hunt |
n.
the ball travelled 90 mph on his serve
the mayor threw out the first ball
the ball rolled into the corner pocket
they had to carry a ramrod as well as powder and ball
a ball of fire
the ball was already emptying out before the fire alarm sounded
she kicked him in the balls and got away
he played with his rubber ball in the bathtub
a ball of mud caught him on the shoulder
the ball at the base of the thumb
he stood on the balls of his feet
he threw nine straight balls before the manager yanked him
v.
ball wool