玉鏟 的英文怎麼說
中文拼音 [yùchǎn]
玉鏟
英文
jade spade-
The shovelfuls of loam, black as et, brought there by the river when it was as wide as the whole valley, were an essence of soils, pounded champaigns of the past, steeped, refined, and subtilized to extraordinary richness, out of which came all the fertility of the mead, and of the cattle grazing there
一鏟一鏟的黑土，像墨玉一樣漆黑，是在河流還同山谷一樣寬闊時被沖到這兒的，它們是土壤的精華，是過去被打碎的原野經過浸泡提煉，才變得特別肥沃，從這種土壤里又長出豐茂的牧草，喂養那兒的牛群。Shovels on the left, tortillas on the right
鏟子在左邊，玉米粉圓餅在右邊。Aiming at the defects of the imc - 70 model stubble - plastic film residue collector that the draft is rather great and the plastic residue or stubble are sometimes left out in the operation process, formulas for the principal parameters of the knives have been driven out based on the analysis of the distribution manner in the field of the stubble and plastic film residue, the variation range and the variation tendency of the principal parameters for the reduction of the draft have been found on a trial basis in the corn field through theoretical analysis and experimental study and a mathematical model for the draft applied on the knives has been established in accordance with the movement and distortion of the soil under the action of the knives
本文針對1mc ? 70型地膜回收起茬機起膜、起茬鏟刀在作業中阻力大，殘膜、根茬有漏起的現象，通過對作物收獲后殘膜、根茬在田間分佈情況的分析，推導出鏟刀滿足生產要求主要參數的求取方法和公式，並經理論分析和試驗研究，確定了鏟刀對玉米茬地進行起膜、起茬時主要參數的取值范圍和減小牽引阻力各參數的取值規律。以鏟刀作用下土壤的運動變形為基礎，建立了鏟刀牽引阻力模型。The testing result in sandy soil shows that the law that the principal parameters of the knives exert influence on the draft approximately approaches to the result theoretically driven out, and a pair of knives has been chosen to be a favourable one with satisfactory performance and smaller draft for the plastic film mulched corn field through the contrast tests to number of pairs of knives
砂質壤土中的試驗表明，鏟刀主要參數對牽引阻力的影響規律與理論推導結果相近。通過多副鏟刀的對比試驗，選取出對玉米茬地進行起膜、起茬作業時，性能良好，牽引阻力較小的鏟刀。分享友人