矿石品位 kuàng shí pǐn wèi ore grade / grade of ore 八级工 八級工 bā jí gōng grade 8 worker (highest on the eight grade wage scale) / top-grade worker 铁矿 鐵礦 tiě kuàng iron ore / iron ore mine 回采 回採 huí cǎi stoping (excavating ore using stepped terraces) / to extract ore / extraction / to pull back 矿层 礦層 kuàng céng ore stratum / vein of ore 低档 低檔 dī dàng low-grade / of low worth or rank / poor quality / inferior syn 水丝 水絲 shuǐ sī (silver) of low purity / low grade 富矿 富礦 fù kuàng high-grade ore 低调 低調 dī diào low pitch / quiet (voice) / subdued / low-key / low-profile 低地球轨道 low Earth orbit / low orbit / low-altitude orbit 低水平放射性废物 低水平放射性廢物 dī shuǐ píng fàng shè xìng fèi wù low-activity waste / low-level waste / low-level radioactive waste 评分 評分 píng fēn to grade / to mark (student's work) / grade / score (of student's work) 高档 高檔 gāo dàng superior quality / high grade / top grade syn 分级 分級 fēn jí to rank / to grade / to classify / rank / grade / classification syn 丙等 bǐng děng third rank / third category / third grade / grade C Ａ咖 A kā class "A" / top grade / class "A" / top grade 低劣 dī liè inferior quality / substandard / low-grade syn 窑子 窯子 yáo zi (old) low-grade brothel syn 低沉 dī chén (of weather) overcast / gloomy / (of a voice) low and deep / low-spirited / downcast syn 低级 低級 dī jí low level / rudimentary / vulgar / low / inferior syn 下级 下級 xià jí low ranking / low level / underclass / subordinate syn 低压 低壓 dī yā low pressure / low voltage 低潮 dī cháo low tide / low ebb 低分 dī fēn low marks / low score 低碳 dī tàn (attributive) low-carbon / low-carb (diet) 高不成低不就 gāo bù chéng dī bù jiù can't reach the high or accept the low (idiom) / not good enough for a high post, but too proud to take a low one 低缓 低緩 dī huǎn low and unhurried (voice etc) / low and gently sloping (terrain) syn 洼 窪 wā depression / low-lying area / low-lying / sunken syn 高不凑低不就 高不湊低不就 gāo bù còu dī bù jiù can't reach the high or accept the low (idiom) / not good enough for a high post, but too proud to take a low one 高低不就 gāo dī bù jiù can't reach the high or accept the low (idiom) / not good enough for a high post, but too proud to take a low one 平均大潮低潮面 píng jūn dài cháo dī cháo miàn mean low-water springs / spring low-water 低潮线 低潮線 dī cháo xiàn low-water line / LW line / low-tide mark 平均小潮低潮面 píng jūn xiǎo cháo dī cháo miàn mean low-water neaps / neap low-water 低毒性浓度 低毒性濃度 low toxic concentration / toxic concentration low 低当量核武器 低當量核武器 low-yield nuclear weapon / low-yield weapon 干潮 乾潮 gān cháo low tide / low water V沟 V溝 V gōu low neckline that reveals the cleavage / décolleté / gully / low neckline that reveals the cleavage / décolleté / gully 沉潜 沉潛 chén qián to lurk under water / to immerse oneself in (study etc) / to lie low / to keep a low profile / quiet / reserved / self-possessed 大头兵 大頭兵 dà tóu bīng low-ranking soldier / (by extension) low-level employee 廉航 lián háng low-cost carrier / low-cost airline / budget airline (abbr. for 廉價航空|廉价航空[lian2 jia4 hang2 kong1]) 开采 開採 kāi cǎi to extract (ore or other resource from a mine) / to exploit / to mine syn 提炼 提煉 tí liàn to extract (ore, minerals etc) / to refine / to purify / to process syn 铁矿石 鐵礦石 tiě kuàng shí iron ore 矿石 礦石 kuàng shí ore 金矿 金礦 jīn kuàng gold mine / gold ore syn 烧结 燒結 shāo jié to sinter / to agglomerate ore by burning syn 挖矿 挖礦 wā kuàng to mine ore or minerals / (computing) to mine cryptocurrency 铜矿 銅礦 tóng kuàng copper mine / copper ore 采掘 採掘 cǎi jué to excavate / to extract (ore) syn 精矿 精礦 jīng kuàng refined ore / concentrate 尾矿 尾礦 wěi kuàng mining waste / waste remaining after processing ore / tailings 锰矿 錳礦 měng kuàng manganese ore 磷矿 磷礦 lín kuàng phosphate ore 矿脉 礦脈 kuàng mài vein of ore 焙烧 焙燒 bèi shāo to roast / to bake (e.g. mineral ore) 矿体 礦體 kuàng tǐ ore body (geology) syn 锡矿 錫礦 xī kuàng tin ore 铝矾土 鋁礬土 lǚ fán tǔ bauxite / aluminum ore 赤铁矿 赤鐵礦 chì tiě kuàng hematite (red iron ore) / ferric oxide Fe2O3 鑛 kuàng variant of 礦|矿 / mining / ore 剥采比 剝採比 bō cǎi bǐ stripping-to-ore ratio / stripping ratio 沥青铀矿 瀝青鈾礦 lì qīng yóu kuàng pitchblende (uranium ore) 礜石 yù shí arsenic ore / arsenopiryte FeAsS 菱镁矿 菱鎂礦 líng měi kuàng magnesite / magnesium ore 铅矿 鉛礦 qiān kuàng lead ore 铝土 鋁土 lǚ tǔ bauxite / aluminum ore 锆英砂 鋯英砂 gào yīng shā zircon sand (zirconium ore) 钛铁矿 鈦鐵礦 tài tiě kuàng ilmenite FeTiO3 / titanium ore 矿砂船 礦砂船 kuàng shā chuán ore carrier 硫化矿 liú huà kuàng sulphide ore 铀矿石浓缩物 鈾礦石濃縮物 yóu kuàng shí nóng suō wù uranium ore concentrate / uranium concentrate / yellowcake 铀浓缩物 鈾濃縮物 yóu nóng suō wù uranium ore concentrate / uranium concentrate / yellowcake 铀黄饼 鈾黃餅 yóu huáng bǐng uranium ore concentrate / uranium concentrate / yellowcake 铁矿出口国家协会 鐵礦出口國家協會 Association of Iron Ore Exporting Countries 塃 huāng (dialect) newly-mined ore 等级 等級 děng jí grade / rank / status syn 级别 級別 jí bié (military) rank / level / grade 高级 高級 gāo jí high level / high grade / advanced / high-ranking syn 升级 升級 shēng jí to go up by one grade / to be promoted / to escalate (in intensity) / (computing) to upgrade syn 得分 dé fēn to score a point (in a competition, test etc) / score / rating / grade 二级 二級 èr jí grade 2 / second class / category B 班级 班級 bān jí class (group of students) / grade (in school) 分数 分數 fēn shù (exam) grade / mark / score / fraction syn 三级 三級 sān jí grade 3 / third class / category C 四级 四級 sì jí grade 4 / fourth class / category D 档次 檔次 dàng cì grade / class / quality / level syn 品位 pǐn wèi rank / grade / quality / (aesthetic) taste syn 年级 年級 nián jí grade / year (in school, college etc) / CL:個|个[ge4] 高位 gāo wèi high position / eminent status / top job / raised position / upper (limbs) / a high (i.e. local maximum) / high point on scale, high grade, temperature, latitude etc syn 打分 dǎ fēn to grade / to give a mark 一等 yī děng first class / grade A syn 特级 特級 tè jí special grade / top quality syn 出线 出線 chū xiàn (sports) to go out of bounds / to go over the line / to qualify for the next round of competition / (Tw) (fig.) to make the grade / to achieve success 升学 升學 shēng xué to enter the next grade school 小三 xiǎo sān mistress / the other woman (coll.) / grade 3 in elementary school 阅卷 閱卷 yuè juàn to grade exam papers 三甲 sān jiǎ 3rd rank of candidates who passed the imperial examination / (hospital ranking) A-grade tertiary (the highest level) (abbr. for 三級甲等|三级甲等[san1 ji2 jia3 deng3]) 大班 dà bān tai-pan / business executive / foreign business manager / top class of kindergarten or school grade syn 上色 shàng sè top-quality / top-grade syn 