- 換鉆頭
- bit: bit1 bite 的過(guò)去式及過(guò)去分詞。
- change: vt. 1.改變，變更，變換，變革。 2.交換；兌換；把 ...
- changing: 不斷改變的; 更換彈種
- a bit: 有點(diǎn); 有一點(diǎn)兒
- a bit of: 少量的，一點(diǎn); 有一點(diǎn)兒
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bit changing中文什么意思
- 換鉆頭
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例句與用法
- There are a lot of surplus rural laborers need to transfer in our country . the key point of urbanization process is country urbanization . . therefore the best way is developing small town , which is deferent from developed countries . the government pay a great attention to develop small town and pick up the strategy of ‘ small town , big strategy ’ . so our country will qicken the development of small town , but the pattern of its development will have a little bit change
從現(xiàn)實(shí)國(guó)情出發(fā),中國(guó)在20世紀(jì)80年代選擇了發(fā)展小城鎮(zhèn)的城市化道路,并上升為“小城鎮(zhèn),大戰(zhàn)略”的高度,這表明,在今后相當(dāng)長(zhǎng)時(shí)間內(nèi)小城鎮(zhèn)都將加快發(fā)展,但在發(fā)展原則和發(fā)展模式上將會(huì)有較大的變化。改革開放以來(lái),隨著鄉(xiāng)鎮(zhèn)企業(yè)的蓬勃發(fā)展,我國(guó)小城鎮(zhèn)已經(jīng)獲得長(zhǎng)足的發(fā)展,取得了巨大的經(jīng)濟(jì)社會(huì)效益。 - The result of simulation of model 8 ? 1 / 2 ? xhp2s bit shows that , the torque on the bit changes randomly , and the degree of the change increases with the increase of the weight on bit ; the change of the torque on the upper part of the drillstring is not so large as that on the string ' s lower part , and the rotary speed of the bit changes smoothly overall
對(duì)8英寸xhp2s鉆頭做了仿真，結(jié)果表明，鉆頭處受巖石的阻力扭矩是隨機(jī)變化的，并有負(fù)扭矩出現(xiàn)，扭矩的變化幅值隨靜鉆壓的增加而增加；鉆柱頂部轉(zhuǎn)盤施加的扭矩變化不如底部劇烈；鉆頭的轉(zhuǎn)速在局部有較小的波動(dòng)，其總體變化較為平緩。