timing n. 1.時間選擇。 2.定時,校時,計時,調速。 3.【自動化】同步;時限。 The timing of our statement is very opportune. 我們發表聲明選擇的時機很恰當。 pulse timing 脈沖同步,脈沖計時。 a timing dial (收音機的)電眼。 a timing generator 定時信號發生器。 timing devices 定時裝置。
extract vt. 1.(用力)拔出,抽出。 2.分離出,提取,蒸餾出,榨出。 3.摘出(要點),引用。 4.推斷出。 5.【數學】開(方),求(根)。 6.【軍事】退(彈)。 extract a tooth 拔牙。 I could extract no information from him. 我從他那里一點兒消息也打聽不出來。 extract the root 開方,求根。 n. 1.抽出物;提出物,蒸餾品,精華,汁;【藥學】浸膏。 2.拔萃;摘錄,摘記,抄。 extract of beef =beef extract 牛肉汁。 extract of roses 玫瑰精。 make extracts 精選,摘要。 -able, -ible adj.
The ultraviolet absorbance of the extraction liquid didn ' t relate to the sample weight or the extracted time 化探樣萃取液的紫外吸光度與萃取時間及稱樣量關系不大。
The optimum method of tta extraction : the extracting agent cocentration is 0 . 5mol / l , the diluent is xylene , the extracting media is nitric acid , its concentration is 4mol / l , the extracting time is lomin Tta萃取分離的最佳分離方案:萃取劑濃度為0 . 5mol / l ,稀釋劑采用二甲苯,采用4mol / l的硝酸做為萃取介質,每次萃取時間為10min 。
Methods with the content of the gentionpicrin as the index , the orthogonal test method was used for studying the effect of four factors ( alcohol concentration , the amount of alcohol , digestion times , extracting time ) on extracting rate 方法:采用正交試驗法,以龍膽苦苷為檢測指標,用正交試驗考察4種因素(乙醇濃度、溶媒用量、浸提次數、提取時間)葉其含量的影響。
Abstract : the chromium leaching - out toxicity was determined with different extraction agents , different extracting time , different solid - liquid rate and different extracting method . in accordance with petroleum drilling engineering and protecting environment , a test method suited to evaluate the leaching - out toxicity of waste drilling mud was suggested 文摘:以鉻為分析指標,探討了鉆井廢棄泥漿在不同的提取劑、不同的提取時間、不同的固液比以及不同的提取方式下鉻的浸出毒性大小,提出了適合評價鉆井廢棄泥漿中鉻的浸出毒性的試驗方法。
The wavelet packet transform is investigated as a novel means of extracting time - frequency information and reducing dimensions of feature from vibration signal in the infinite time domain . neural network is discussed as a pattern classifier to finish damage pattern classification by inputting node energy feature vector 小波包變換以其特有的高頻分辨率能夠實現對結構振動信號的特征提取,可以把時域無限的測試振動信號降維,得到有限個節點能量信號構成的特征指標。
The chromium leaching - out toxicity was determined with different extraction agents , different extracting time , different solid - liquid rate and different extracting method . in accordance with petroleum drilling engineering and protecting environment , a test method suited to evaluate the leaching - out toxicity of waste drilling mud was suggested 以鉻為分析指標,探討了鉆井廢棄泥漿在不同的提取劑、不同的提取時間、不同的固液比以及不同的提取方式下鉻的浸出毒性大小,提出了適合評價鉆井廢棄泥漿中鉻的浸出毒性的試驗方法。