必要 bì yào necessary / essential / indispensable / required syn 必需 bì xū to need / to require / essential / indispensable syn 要点 要點 yào diǎn main point / essential syn 主流 zhǔ liú main stream (of a river) / fig. the essential point / main viewpoint of a matter / mainstream (culture etc) syn 要素 yào sù essential factor / key constituent syn 必需品 bì xū pǐn necessity / essential (thing) syn 必备 必備 bì bèi essential syn 闪光点 閃光點 shǎn guāng diǎn lit. flash point / crucial point / essential point 必不可少 bì bù kě shǎo absolutely necessary / indispensable / essential syn 化工厂 化工廠 huà gōng chǎng chemical factory / chemical plant 化工 huà gōng chemical industry (abbr. for 化學工業|化学工业[hua4xue2 gong1ye4]) / chemical engineering (abbr. for 化學工程|化学工程[hua4xue2 gong1cheng2]) 可有可无 可有可無 kě yǒu kě wú not essential / dispensable syn 农药 農藥 nóng yào agricultural chemical / farm chemical / pesticide 纲要 綱要 gāng yào outline / essential points syn 切切 qiè qiè urgently / eagerly / worried / (urge sb to) be sure to / it is absolutely essential to (follow the above instruction) syn 因噎废食 因噎廢食 yīn yē fèi shí lit. not eating for fear of choking (idiom) / fig. to cut off one's nose to spite one's face / to avoid sth essential because of a slight risk syn 精油 jīng yóu essential oil 赖氨酸 賴氨酸 lài ān suān lysine (Lys), an essential amino acid 蛋氨酸 dàn ān suān methionine (Met), an essential amino acid 精氨酸 jīng ān suān argnine (Arg), an essential amino acid 色氨酸 sè ān suān tryptophan (Trp), an essential amino acid 至关重要 至關重要 zhì guān zhòng yào extremely important / vital / crucial / essential syn 苏氨酸 蘇氨酸 sū ān suān threonine (Thr), an essential amino acid 卟啉 bǔ lín porphyrin (organic chemical essential to hemoglobin and chlorophyll) (loanword) 亮氨酸 liàng ān suān leucine (Leu), an essential amino acid 组氨酸 組氨酸 zǔ ān suān histidine (His), an essential amino acid 异亮氨酸 異亮氨酸 yì liàng ān suān isoleucine (Ile), an essential amino acid 反应 反應 fǎn yìng to react / to respond / reaction / response / reply / chemical reaction / CL:個|个[ge4] syn 金 jīn gold / chemical element Au / generic term for lustrous and ductile metals / money / golden / highly respected / one of the eight categories of ancient musical instruments 八音[ba1 yin1] syn 化学 化學 huà xué chemistry / chemical syn 化验 化驗 huà yàn chemical examination / to do a lab test 药剂 藥劑 yào jì medicine / medicament / drug / chemical compound syn 化合物 huà hé wù chemical compound 化学反应 化學反應 huà xué fǎn yìng chemical reaction 颗粒 顆粒 kē lì kernel / granule / granulated (sugar, chemical product) syn 制剂 製劑 zhì jì (chemical or pharmaceutical) preparation syn 化学武器 化學武器 huà xué wǔ qì chemical weapon 毒剂 毒劑 dú jì a poison / a toxic agent / poison gas / a chemical weapon 定性 dìng xìng to determine the nature (of sth) / to determine the chemical composition (of a substance) / qualitative syn 化肥 huà féi chemical fertilizer syn 水解 shuǐ jiě hydrolysis (chemical reaction with water) 化合 huà hé chemical combination 化学工业 化學工業 huà xué gōng yè chemical industry (abbr. to 化工[hua4gong1]) 化学式 化學式 huà xué shì chemical formula (e.g. water H2O) 中石化 zhōng shí huà China Petroleum and Chemical Corporation, Sinopec / abbr. for 中國石油化工股份有限公司|中国石油化工股份有限公司 化学成分 化學成分 huà xué chéng fèn chemical composition 基质 基質 jī zhì base solvent (of chemical compound) / stroma (framing biological tissue) 化学工程 化學工程 huà xué gōng chéng chemical engineering 化学性质 化學性質 huà xué xìng zhì chemical property 浸种 浸種 jìn zhǒng to soak seeds (in water to hasten germination, or in a chemical solution to prevent damage from insects etc) 碱基 鹼基 jiǎn jī chemical base / nucleobase 青蒿素 qīng hāo sù Arteannuin (anti-malaria chemical) / Artemisinin / Qinghaosu 反应锅 反應鍋 fǎn yìng guō (chemical engineering) reaction vessel / reaction tank 键 鍵 jiàn key (on a piano or computer keyboard) / button (on a mouse or other device) / chemical bond / linchpin 化学元素 化學元素 huà xué yuán sù chemical element 极性 極性 jí xìng (chemical, electrical) polarity / polarized 化学键 化學鍵 huà xué jiàn chemical bond 化学剂 化學劑 chemical agent 化学能 化學能 huà xué néng chemical energy 化学战 化學戰 huà xué zhàn chemical warfare 吩 fēn used in 吩咐[fen1fu5] / used in transliteration of chemical compounds 腐蚀剂 腐蝕劑 fǔ shí jì a corrosive (chemical) 化武 huà wǔ chemical weapon / abbr. for 化學武器|化学武器[hua4 xue2 wu3 qi4] 反应式 反應式 fǎn yìng shì equation of a chemical reaction 解吸 jiě xī to de-absorb / to get a chemical out of solution 核生化 hé shēng huà nuclear, biological and chemical 吖 ā (used in transliterating chemical names) 化学变化 化學變化 huà xué biàn huà chemical change / chemical transformation 本性难移 本性難移 běn xìng nán yí It is hard to change one's essential nature (idiom). You can't change who you are. / Can the leopard change his spots? (Jeremiah 13:23) 万不得已 萬不得已 wàn bù dé yǐ only when absolutely essential (idiom) / as a last resort syn 化学分析 化學分析 huà xué fēn xī chemical analysis 液－液化学交换工艺 liquid-liquid chemical exchange process / chemical exchange isotope separation / solvent extraction process 化学监察小组 化學監察小組 chemical monitoring group / chemical group 化学武器视察队 化學武器視察隊 huà xué wǔ qì shì chá duì chemical weapons team / chemical weapons inspection team / CW team 化学溶液保存容器 化學溶液保存容器 huà xué róng yè bǎo cún róng qì chemical holding vessel / chemical storage vessel 化学浓缩法 化學濃縮法 huà xué nóng suō fǎ chemical enrichment method / chemical exchange isotope separation 化学交换同位素分离 化學交換同位素分離 chemical enrichment method / chemical exchange isotope separation 禁止化学武器会议 禁止化學武器會議 Conference of States Parties to the 1925 Geneva Protocol and Other Interested States on the Prohibition of Chemical Weapons / Conference on the Prohibition of Chemical Weapons / Paris Conference 巴黎会议 巴黎會議 Conference of States Parties to the 1925 Geneva Protocol and Other Interested States on the Prohibition of Chemical Weapons / Conference on the Prohibition of Chemical Weapons / Paris Conference 人精 rén jīng sophisticate / man with extensive experience / child prodigy / Wunderkind (i.e. brilliant child) / spirit within a person (i.e. blood and essential breath 血氣|血气 of TCM) 切要 qiè yào essential / extremely important 甲硫氨酸 jiǎ liú ān suān methionine (Met), an essential amino acid 神髓 shén suǐ lit. spirit and marrow / the essential character 精讲多练 精講多練 jīng jiǎng duō liàn a teaching strategy combining a concise explanation of essential concepts with frequent practice 缬氨酸 纈氨酸 xié ān suān valine (Val), an essential amino acid 苯丙氨酸 běn bǐng ān suān phenylalanine (Phe), an essential amino acid 贾思勰 賈思勰 jiǎ sī xié Jia Sixie, sixth century writer and author of agricultural encyclopedia Essential skill to benefit the people 齊民要術|齐民要术[Qi2 min2 Yao4 shu4] 风油精 風油精 fēng yóu jīng essential balm containing menthol, eucalyptus oil etc, used as a mosquito repellant 齐民要术 齊民要術 qí mín yào shù Essential skill to benefit the people, sixth century encyclopedia of agricultural knowledge by Jia Sixie 賈思勰|贾思勰[Jia3 Si1 xie2] 不可少 bù kě shǎo indispensable / essential 基本服务一揽子方桉 基本服務一攬子方案 Essential Services Package 区域间必需药品方桉 區域間必需藥品方案 Interregional programme for essential drugs 必需药品行动纲领 Action Programme on Essential Drugs 基本平衡 jī běn píng héng essential parity 必需药品和疫苗行动纲领 Action Programme on Essential Drugs and Vaccines 基本立法联合委员会 基本立法聯合委員會 Joint Commission on Essential Legislation 阿富汗妇女基本权利宣言 阿富汗婦女基本權利宣言 Declaration of the Essential Rights of Afghan Women 恢复萨拉热窝基本公用事业行动计划 恢複薩拉熱窩基本公用事業行動計劃 Plan of Action to Restore Essential Public Services in Sarajevo 必要工作人员 必要工作人員 essential staff / critical staff 