centre drill 中文意思是什麼
centre drill
解釋
中心孔鉆-
The 13 - storey institute, with floor area of 13, 000 square metres, features multiple facilities including a drill ground, 13 classrooms, lecture theatre, indoor swimming pool, learning resource centre, information resources centre, obstacle training ground, physical fitness centre and gymnasium with elevated running tracks
這是一所樓高13層的綜合大樓，樓面面積達13 ， 000平方米，內有多項設施，包括步操場、 13間課室、演講廳、室內游泳訓練池、學習資源中心、訊息資源中心、障礙訓練場、健身中心及設有高架跑道的室內運動場。 -
They arranged for the students of the chak yan centre to visit the hkma in may, assisted the airport authority to conduct an emergency drill in june, and helped to organise activities, with environment - protection themes, to raise donations for the pupils in liannan, one of the mountainous areas of guangdong, inhabited by the minority yao people
義工小組在5月為則仁中心的學生安排參觀金管局，並於6月協助機場管理局進行緊急救援演習。此外，義工小組亦協助籌辦多項以環保為主題的活動，為聚居於廣東省山區連南的少數民族瑤族學生籌募善款。 -
Drill a hole in the centre of the blank pcb so that the copper pipe is a tight fit in the hole
在空白電路板的中間鉆一個小孔，使得銅管正好緊緊地固定在中間。
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