back seal 中文意思是什麼

back seal 解釋
倒密封
  • back : n 1 背，背部；背脊；背面，反面；背後，後部，後面，裏面。2 （指）甲；（刀）背；（手）背；（書）背...
  • seal : n 〈sing pl 〉【動物；動物學】1 海豹。2 海豹毛皮（製品）。3 海豹皮色〈灰黃深褐色〉。4 〈Seals〉〈...
  1. Two sets of back - to - back assembled mechanical seal bia, and together with a shared spring can form a double mechanical seal

    由二套bia機械密封背靠背安裝，共用一個彈簧可組成一套雙端面機械密封型式。
  2. Fsb series fluoroplastic alloy pump is composed of pump body, impeller, back cover, seal, support, pump shaft, bearing, coupling, fasten bolt, nut and base plate

    Fsb系列氟塑料合金泵由泵體、葉輪，后蓋，密封性，支架，泵軸，軸承，連軸器，吊緊螺栓，螺母，底板組成。
  3. A raised seal affixed to the back of a certificate of stock to verify an endorsement signature when transferring ownership of shares

    簽名擔保印章轉讓股份時蓋在股票證書背面，用以證明背書簽名的凹凸印章。
  4. " the seal had been lying in the same spot since friday, so the lady and a few other people were trying to take it back to the water, " said herman oosthuizen, a marine biologist with the department of environmental affairs. " the young female seal then bit her in the face.

    南非環境事務部的海洋生物學家赫爾曼烏斯圖伊森表示： 「這頭海豹從28日起便一直躺在同一地點，所以湯德爾女士便和其他人試圖把它重新送回海洋，而在此過程中，這頭雌性海豹突然在湯德爾女士的臉上猛咬了一口。 」
  5. Inscribed on its back is a " eulogy of the golden bull " written by the qing emperor qianlong in the ancient seal style

    昆明湖畔的鎮水銅牛鑄於一七五五年，背上鑄有八十字的篆書銘文。
  6. Backseat ? machined bonnet stem bushing provides back - up stem seal

    後座-經過精密加工的閥蓋閥桿襯套實現後座閥桿密封。
  7. They also found signs of a second shift, from surf and turf back to land beasts alone, corresponding to the time when human settlers began hunting seal and whale

    同時他們還發現到，禿鷹的食物來源有過另一次轉變的跡象：從海陸大餐回復到只以陸生動物為食；這個轉變期，與定居的人類開始捕捉海豹及鯨魚的時期相互對應。
  8. Xh rubber slowly - closing cut - off vavle is a new water supply and drainage vavle with full rubber structure, duck - mouthed appearance and functions or positive flow - in and reserve cut - off. according to thrust analysis and calculation as well as different operation mechanism and different rubber products by special processing. all will be open at weak hydraulic pressure is higher, the vavle gate will open more greatly and the water flow is greater. at reserve operation, the vavle gate closes naturally and seals tightly cut - off vavle ; the back pressure is higher, the vavle gate closes more tightly and the seal effect is better. it is used widely in various drainage exit to prevent from pouring backwards and flowing backwards in city planning, water conservancy and sewage disposal etc. it is the ideal productto replace flap vavle

    Xf型橡膠緩閉逆止閥是一種全橡膠結構外形呈「鴨嘴狀」 ，具有「正向流入反向逆止」功能的新型給排水閥門產品。它根據受力分析和受力計算，針對不同的工況，採用不同的設計機理，選用不同的橡膠配方，並按特殊工藝製作而成。正向工作時，水由進水口流入，微小的水壓，便能打開閥門，水壓越大，閥門開啟越大，水流量越大。
  9. To ensure the charging pump working reliably, the following measures should be adopted : ( 1 ) adopting modified circular casing to reduce the radial force of the impeller and decrease the seal clearance ; ( 2 ) using radical ribs on impeller and helical sealing on shaft to realize minor pressure differential ; ( 3 ) using back pressure stuffing box to ensure sealing under small packing force ; ( 4 ) adopting self - lubricant flexible graphite stuffing for absorption of solids entering in the graphite in case of leaking

    為確保灌注泵可靠工作，提出改進措施： （ 1 ）採用改型環形泵體降低葉輪的徑向力，減小軸封間隙，抑制泄漏； （ 2 ）採用背葉片降低葉片根部壓頭，獲得微壓，使軸封兩端承受較小壓差； （ 3 ）採用螺旋密封降低軸封兩端壓差，在保持微壓的同時避免出現負壓，密封效果更好； （ 4 ）採用反壓式填料密封結構，在很小的壓緊力下，即可保證密封； （ 5 ）採用具有潤滑功效的柔性石墨填料，即使發生軸封泄漏，進入石墨內部的固相顆粒也將隨著石墨的消耗而被鉆井液吸收。
  10. The art of seal - engraving can be traced back to more than 3000 years to the yin dynasty when people engraved their names on utensils and document to claim ownership or for verification in social contacts

    篆刻是一門藝術，其歷史可以追溯到3000年前的殷朝，那時人們把自己的名字刻在器皿或文件上，這樣可以表明物品的所有權或象徵其在社會交往中的身份與地位。
  11. Seal engraving ? the art of seal - engraving can be traced back to more than 3000 years to the yin dynasty when people engraved their names on utensils and documents to claim ownership or for verification in social contacts

    篆刻篆刻是一門藝術，其歷史可以追溯到3000年前的殷朝，那時人們把自己的名字刻在器皿或文件上，這樣可以表明物品的所有權或象徵其在社會交往中的身份與地位。
  12. Herman oosthuizen, marine biologist. a seal bit off a south african woman ' s nose after she tried to help it back into the sea

    一位南非婦女好心幫助海豹重返大海，卻被它咬下了鼻子.對此海洋生物學家赫爾曼?烏斯圖伊森作了解釋
  13. C, reserve cur - off has good seal without leakage to privent from flowing backwards. the back pressure is higher and the effect is better

    C反向逆止密封好，沒有滲漏，防止了倒流，背壓越大，效果越佳
  14. Water system. u - fabric laminated rubber seal. back up ring. type and size

    水系統. u形夾織物橡膠密封.支承環.型式與尺寸
  15. Back seal test

    上密封試驗
  16. The ball whets the machine filler letter is a quality that ball whet the machine to seal completely the device primarily, its appearance affects the system directly normal to circulate, this text introduced the ball whets the machine filler letter equips the improvement in front and back of the necessity of the condition, improvement, and good function in empress in improvement

    摘要球磨機填料函是球磨機的主要密封裝置，其狀態的好壞直接影響到系統的正常運行，本文介紹了球磨機填料函裝置改進前後的狀況、改進的必要性、以及改進后優良的性能。
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