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- The study presented here is the first step in a program aimed at reducing significantly the background count rate of NaI scintillation units. 這里程序第一步的學(xué)習是為了顯著(zhù)的減少非地址指令傳送單元的暗中統計率。
- The results show that the radioactivity level of varied water bod-ies of the city was within normal natural background. 調查結果表明，上海市各類(lèi)水體中天然放射性核素濃度屬正常本底水平。
- The results show that the radioactivity level of variedwater bodies of the province was within normal natural background. 調查結果表明,全區絕大部分水體中天然放射性核素濃度屬正常本底水平,個(gè)別水樣核素濃度偏高。
- There are 575 deluxe rooms of various styles in the 550 mu tropic plants garden of the hotel, preparing amazing natural background for this picture-like resort. 酒店現有575間風(fēng)格迥異的豪華客房點(diǎn)綴于550畝的熱帶植物花園中,為這一風(fēng)景如畫(huà)的仙游圣地平鋪了靚麗的天然底色。
- On the whole, cities enjoyed good acoustic environment and radioactivity pollution maintained at natural background level. The total amount of arable land was on decline. 城市聲環(huán)境質(zhì)量較好,輻射環(huán)境質(zhì)量基本維持在天然本底水平。
- When natural background sounds, like the engine tickover of a parked car, were added, the hybrids' direction sometimes could not be detected until they were perilously close. 如果添加諸如停車(chē)時(shí)發(fā)動(dòng)機的空轉此類(lèi)自然背景音，有時(shí)混合型汽車(chē)的方向在危險距離之前根本無(wú)從判斷。
- The rates of extinction of local species that accompany these rapid changes in land cover may soon be far in excess of what is found today,reaching as high as 10,000 times the natural background rate. 伴隨著(zhù)這些士地覆蓋的迅速變化，當地物種滅絕的速率可能很快便大大超過(guò)了我們今天所發(fā)現的，達到自然的1萬(wàn)倍。
- The rates of extinction of local species that accompany these rapid changes in land cover may soon be far in excess of what is found today, reaching as high as 10, 000 times the natural background rate. 伴隨著(zhù)這些士地覆蓋的迅速變化，當地物種滅絕的速率可能很快便大大超過(guò)了我們今天所發(fā)現的，達到自然的1萬(wàn)倍。
- In this paper, an algorithm based on watershed transformation and fuzzy logical catchment basins combination is proposed to suppress or remove the feature of natural background, and applied to infrared object boundary detection and labeling. 文中在分水嶺算法的基礎上，結合模糊邏輯方法，對自然背景下的紅外人工目標的邊界檢測和分割以及紅外背景的抑制進(jìn)行了探討。
- The standardized uptake value (SUV) and the ratio of lesion s counts to background counts (L/B) are usually used in clinical oncology. 臨床腫瘤學(xué)中常用的正電子圖像定量分析指標為標準化攝取值(SUV)及病灶/本底計數比(L/B)。
- To improve the detectable limit of radioactive aerosol monitors, it is very important to eliminate the inter-ference of the natural background, i.e. radon and thoron daughter aerosol. 為提高放射性氣溶膠監測儀的靈敏度,消除天然本底即氡子體氣溶膠的干擾是極為重要的。
- natural background radioactivity 天然本底放射性
- It is natural for a cat to catch mice. 貓捉老鼠是本能。
- It's natural to slack2 off towards the end of a hard day's work. 一天緊張工作快結束的時(shí)候有些放松是自然的。
- Many natural materials are becoming scarce. 許多天然原料越來(lái)越少。
- Count! Utilize natural opportunities that arise. 數數!利用所有自然的機會(huì )。
- Our motherland flows with natural resources. 我們祖國蘊藏著(zhù)豐富的天然資源。
- Events took their natural course. 事態(tài)依自然進(jìn)程發(fā)展。
- She has a natural wave in her hair. 她的頭發(fā)自然卷曲。
- Magnetism is a natural phenomenon. 磁力是一種自然現象。
