preheating time 中文意思是什麼

preheating time 解釋
預熱時間
  • preheating : 初步加熱
  • time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
  1. Need no preheating time. rapid cutting time ( only 2 ~ 5 times ) compare with gas cutting

    不需預熱；跟氣割比較，切割時間縮短2 - 5倍。
  2. During the temperature fields, the results indicate that the processing parameters such as the extrusion velocity, casting temperature, perform preheating temperature, die preheating temperature and so on are important for the temperature fields besides the dwell time. they are must be in concordance each other to the deforming zone is in the quasi - solid state, and the stable semi - solid extrusion is implemented. during the deforming fields, the hyperbolic sine thermo - rigid - viscoplastic fem model is selected according to the forming feature of the process, and the variations of the stress - strain fields are studied

    在溫度場的模擬中，模擬結果表明，保壓時間是影響製件成形質量的關鍵因素之一，擠壓速度、液態金屬澆注溫度、預制體預熱溫度和模具預熱溫度等工藝參數對溫度場的影響也很大，需進行參數之間的協調，只有當變形區內部始終維持準固態時，才能實現穩定的液-固擠壓成形過程；在變形場的模擬中，根據液態浸滲擠壓的成形特徵，選用了雙曲正弦剛-粘塑性有限元計算模型，研究了變形過程中應力應變場的變化規律，研究了模角對變形和金屬流動的影響及變形力的變化過程和其影響因素。
  3. The process parameters of electric upsetting include : velocities of upsetting cylinder and anvil cylinder, heating current, preheating length and time, etc. because different materials have different mechanical, electric and thermal characteristics, and there are effects between different parameters, the determination of those parameters becomes a complex problem

    電熱鐓粗成形過程的工藝參數主要包括鐓粗缸活塞運動速度、砧子缸活塞運動速度、鐓粗壓力、加熱電流和預熱長度等。這些參數的選擇是一個復雜的問題，其復雜性不僅在於不同的材料具有不同的力學、電和熱傳導特性，而且各參數相互影響、相互制約。
  4. The alloy component and the process parameters of the precision casting ( including the exit temperature from furnace, pouring temperature, mould preheating temperature, holding time, cooling form ) have a certain influence on the problem of the blade brittles

    摘要合金含量、精鑄工藝參數（出爐溫度、澆鑄溫度、模殼預熱溫度、保溫時間、冷卻方式）對葉片脆性問題存在一定的影響。
  5. A normal co - axis he - ne laser tube with bore length l = 190 mm was used. with pid and self - organised fuzzy control, the frequency error could be confined to a 10 ~ 9 level. in addition, preheating time and anti - interference were within requirements

    選用腔長l = 190mm的普通同軸式he一e激光管，採用pid和自組織模糊控制模式可達到10一的穩頻精度效果，並滿足預熱時間和抗干擾要求。
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