back-off procedure 倒開(kāi)步驟 
back-off 倒開(kāi) 
back-out 旋松；退火；取消；擰出 
back-packer 支撐式封隔器 
back-pressure regulator 回壓調(diào)節(jié)器 
back-pressure valve 回壓閥 
back-purge system 反沖洗系統(tǒng) 
back-ridge 洋脊背側(cè) 
back-roll 反繞 
back-scattered ground roll 反向散射地滾波 
back-scattered noise 反向散射噪聲 
back-setting effect 逆流效應(yīng) 
back-side-crank pumping unit 單拐多連桿抽油設(shè)備 
back-sizing 單面上漿 
back-sliding nappe 后滑推覆體 
back-slope 后坡 
back-spacing 返回 
back-step welding 逐步退焊 
back-to-back counter 加倍計(jì)數(shù)器 
back-to-back credit export first 輸出方先開(kāi)的對(duì)開(kāi)信用證 
back-to-back credit import first 輸入方先開(kāi)的對(duì)開(kāi)信用證 
back-to-back 對(duì)頭拼接 
back-up attachment 背鉗附件 
back-up control manifold 輔助控制管匯 
back-up corner 后備位置 
back-up curve 輔助曲線 
back-up galvanometer 輔助檢流計(jì) 
back-up post 支柱 
back-up safety 備用安全裝置 
back-up surveillance 輔助監(jiān)督 
back-up tong 背鉗 
back-up wrench 背鉗 
back-ups 背鉗 
backacter 反鏟挖土機(jī) 
backarc 后弧 
backbarrier complex 障壁后復(fù)合體 
backbarrier deposit 障壁后沉積 
backbarrier facies 障壁后相 
backbarrier 障壁后 
backbeach 濱后灘 
backboard 底板 
backbone chain 主鏈 
backbone pipeline 干線 
backbone road 干道 
backbone structure 主鏈結(jié)構(gòu) 
backbone 脊骨；主要部分 
backcountry 邊遠(yuǎn)地區(qū) 
backcycling 反向循環(huán) 
backdraft =backdraught
backdraught 倒車(chē)；逆轉(zhuǎn) 
backdrift 后退偏航 
backdrop 交流聲 
backend processor 后端處理機(jī) 
backer 支持者 
backfall 山坡 
backfeed loop 反饋回路 
backfill compactor 管溝回填土壓實(shí)機(jī) 
backfill crown 回填土堆 
backfill rammer 回填夯實(shí)機(jī) 
backfill tamper 管溝回填夯實(shí)機(jī) 
backfill 回填 
backfiller 回填機(jī) 
backfilling bucket 斗式回填機(jī) 
backfilling gang 管溝回填隊(duì) 
backfilling 回填 
backfin 夾層；裂縫 
backfire 回火 
backfit 變形不大；修合 
backflash 反閃 
backflow channel 回流水道 
backflow connection 回流管 
backflow gate 雙向旋啟式止回閥 
backflow ripple 回流波痕 
backflow test 回流試驗(yàn) 
backflow tracer 回流示蹤劑 
backflow volume 回流液量 
backflow 回流 
backflowing debris 流入井里的碎屑 
backflush chromatogram 反沖色譜 
backfolding 背向褶皺 
backgear 背齒輪 
background activity 本底放射性 
background batch process 基礎(chǔ)程序組方法 
background buildup 本底積累 
background concentration 背景濃度 
background contrast ratio 背景反差比 
background correction 本底校正 
background count 本底計(jì)數(shù) 
background current 本底電流 
background dose 本底劑量 
background equilibrium condition 背景平衡條件 
background evaluations 背景評(píng)價(jià) 
background fluctuation 背景起伏 
background fog 背景霧 
background gas 背景氣 
background heater 隱閉式供暖器 
background hump 本底突峰 
background impurity 本底雜質(zhì) 
background information 背景信息 
background interference 背景干擾 
background ions 本底離子 
background level 背景水平 
background luminance 背景亮度 
background luminescence 本底發(fā)光 
background noise 背景噪聲 
background polarization 背景極化 
background pollution 本底污染 
background population 背景總體 
background probability 背景概率 
background processor 后臺(tái)處理機(jī) 
background program 輔助程序；后臺(tái)程序 
background radiation 本底輻射 
background radioactivity 本底放射性 
background reflectance 背景反差 
background response 本底響應(yīng) 
background return 背景回波 
background seismic wave 本底地震波 
background signal 本底信號(hào) 
background source 本底源 
background spectrum 本底譜線圖 
background subtraction 減去本底 
background value 背景值 
background velocity 背景速度 
background 背景 
backguy 拉線 
backhand drainage pattern 逆向水系型式 
backhand drainage 倒轉(zhuǎn)水系 
backhand 反手；反手一擊 
backhaul 載貨返航 
backhead 后部 
backheating 反加熱 
backhoe loader 反鏟裝載機(jī) 
backhoe 反鏟 
backing bar 撐桿 
backing block 補(bǔ)償繞組 
backing memory 后備存儲(chǔ)器 
backing off 反饋 
backing pass 底焊焊道 
backing plank 襯板 
backing plate 托板 
backing power 倒車(chē)功率 
backing pump 旋轉(zhuǎn)油泵 
backing register 后備寄存器 
backing resistance 倒航阻力 
backing ring 墊環(huán) 
backing run 背面焊接 
backing storage 后備存儲(chǔ)器 
backing store 后備存儲(chǔ)器 
backing strip 條狀墊板 
backing weld 用墊環(huán)的焊縫 
backing 支持；襯墊物 
backing-up screw 防松螺釘 
backjoint 平行解理走向節(jié)理面 
backland 腹地 
backlash eliminator 齒隙消除裝置 
backlash spring 消隙彈簧 
backlash 輪齒隙；齒隙游移 
backlimb thrust 緩翼沖斷層 
backlimb 緩翼 
backlog 儲(chǔ)備；積壓的工作 
backoff string shot 鉆具解卡炮彈 
backpitch 背節(jié)距 
backplan 底視圖 
backplane 底板 
backplate 背面板 
backpressure test 氣井產(chǎn)能測(cè)試 
backproject 幕后投影 
backprojection algorithm 向后投射算法 
backprojection operator 后投影算子 
backprojection 反向投射 
backpropagation algorithm 向后傳播算法 
backpropagation 反向傳播 
backpumping 反輸 
backreaming 倒劃井眼 
backreef facies 后礁相 
backreef lagoon 礁后瀉湖 
backreef sediment 后礁沉積 
backreef zone 礁后帶 
backreef 礁后；礁后區(qū) 
backrush 回流 
backscatter ultraviolet radiometer 后向散射紫外線輻射儀 
backscatter 背反射 
backscattered electron image 反散射電子圖象 
backscattered gamma ray 反散射伽馬射線 
backscatterer 反向散射體 
backscattering coefficient 反向散射系數(shù) 
backscattering gauge 反向散射測(cè)量計(jì) 
backscattering 反向散射 
backset bed 后積層 
backset bedding 后積層層理 
backset current 回流 
backset eddy 逆渦流 
backset 逆流 
backshaft 后軸 
backshore beach ridge 濱后灘脊 
backshore beach 濱后灘 
backshore deposit 濱后沉積 
backshore terrace 后濱階地 
backshore 后濱 
backshuttle line 反循環(huán)管線 
backside pumping 一臺(tái)馬達(dá)帶動(dòng)兩口井抽油機(jī) 
backside 后部 
backsight 回視 
backspring 后向彈簧 
backstay cable 拉索 
backstay 背撐 
backstop 托架 
backstroke 回程 
backsurge chamber volume 反沖洗工具的低壓室體積 
backsurge disc valve 反沖洗圓盤(pán)閥 
backsurge tool string 反沖工具管柱 
backsurge tool stringer 反沖工具尾管 
backsurge tool 反沖洗井工具 
backsurge volume 反沖液量 
backsurge 回壓沖洗 
backsurged debris 反沖出的碎屑 
backsurging operation 反沖洗作業(yè) 
backsurging principle 反沖原理 
backsurging 反沖 
backswamp deposit 漫灘沼澤沉積