What is the translation of " 必须选用 " in English?

• must be selected
• must use
• must choose

Examples of using 必须选用 in Chinese and their translations into English

必须选用合格的建材。
Quality building materials must be selected.

爆炸性环境必须选用相应的防爆产品。
Explosive environments must use the corresponding explosion-proof products.

如水利工程则必须选用强制搅拌主机。
Such as water conservancy project must choose compulsory mixing console.

如水利工程则必须选用强制式搅拌主机。
Such as water conservancy project must choose compulsory mixing console.

如水利工程则必须选用强制搅拌主机。
Such as water projects must be chosen forced mixing console.

如水利工程则必须选用强制式搅拌主机。
Such as water projects must be chosen forced mixing console.

人造草皮必须选用胶，石英砂和胶体颗粒必须符合相关质量要求。
The glue must be selected exclusively for artificial turf, and quartz sand and rubber particles must also meet the relevant quality requirements.

锂离子电池必须选用专用充电器，否则可能会达不到饱和状态，影响其性能发挥。
Lithium-ion batteries must use special chargers, otherwise they may not reach saturation state and affect their performance.

为了确保实施更有效的缓刑制度，必须选用最有效的行为纠正措施。
To ensure more efficient probation, the most effective measures to correct the person' s behaviour must be selected.

安装时用紧固件必须选用专用螺丝，窗架须保持垂直、水平，误差不能超过0.3毫米。
The installation of fasteners must use special screws, window frames should be kept vertical, horizontal, the error can not exceed 0.3 mm;

ULP操作将是这些节点的一个关键参数，而且必须选用能够最小化节点实际功耗的元件。
ULP operation will be a key parameter for these nodes, and components must be selected that minimize the real-world current consumption of the node.6.

对于主要原材料和元器件，我公司都必须选用国内外知名品牌；.
For the main raw materials and components, our company must choose well-known brands at home and abroad;

为抵抗高温空气的氧化作用，因此材料必须选用优质不锈钢；.
In order to resist the oxidation of high temperature air, so the material must use excellent stainless steel;

保证打包机的有效率劳动生产必须选用优质的46号抗磨液压油。
To ensure the production of straw hydraulic baler, we must use high quality and authentic 46 anti-wear hydraulic oil.

特别是当污垢成分复杂时，必须选用多种清洗剂反复清洗才可能满足表面清洁度的要求；.
Especially when the dirt components are complex, multiple cleaning agents must be used to repeatedly clean before they can meet the requirements of surface cleanliness;

为了保证在环境光强烈的情况下远距离可视，必须选用超高亮度发光四通二极管；.
(2) In order to ensure long-distance visibility under strong ambient light conditions, ultra-high brightness light-emitting four-way diodes must be used;

而对1200*1100mm的托盘，要用长1200mm和宽1000mm的组合摆放，必须选用4向进叉。
And 1200* 1100mm Of the tray, to use a combination of length 1200mm and width 1000mm, you must use 4-way into the fork.

它仅需简单的工具，但必须选用规定线规的电缆。
It only requires a simple tool, but it must use a cable with the specified wire gauge.

性环境：必须选用相应防爆等级的电磁阀(我公司现有：dIIBT4、dIICT5、ExmI/IIT4)。
Explosive environment: The corresponding explosion-proof solenoid valve must be selected(our company has: d II BT4, d II CT5, Ex m I/II T4).

有防爆要求时必须选用防爆型，如防爆电接点压力表。
Explosion-proof requirements must be selected, such as explosion-proof electrical contact pressure gauge.

最低工作压差接近或小于零的必须选用分步直接式。
The minimum working pressure difference is close to or less than zero, you must use direct-acting or step-by-step direct type.

波本威士忌必须选用至少51％的玉米作为原料酿制而成。
Bourbon must be made from at least 51 per cent corn mash.

欲避开不想要的程序，你必须选用这个设置，然后小心按照每个步骤操作。
To avoid unwanted programs, we advise you to always choose these settings and carefully follow each installation step.

在潮湿场所或金属构架上操作时，必须选用II类手持式电动工具，并装设防溅型漏电保护器。
In damp places or metal structure operation, must choose class II hand electric tools, and put the splash of the leakage protector.

为了获得新的等价关系或预序，必须选用传递闭包(自反性和对称性-在等价关系的情况下-是自动的)。
To obtain a new equivalence relation or preorder one must take the transitive closure(reflexivity and symmetry- in the case of equivalence relations- are automatic).

仪表类型的选用必须满足工艺生产的要求。
The selection of instrument type must meet the requirements of process production.

仪表类型的选用必须满足工艺生产的要求。
The type of instrument must be selected to meet the requirements of process production.

仪表类型的选用必须满足工艺生产的要求。
Type selection of instrument must meet the requirements of production.

要想进行全面的生产测试并提高测试产能，测试工程师们必须懂得选用最适合的仪器完成这些测试工作。
To conduct a comprehensive production testing and improve testing capacity, test engineers must understand the choice of the most appropriate instrument to complete these tests.

工作压力：如果工作压力低则必须选用直动或分步直动式原理；.
Working pressure: If the working pressure is low, the direct-acting or step-by-step direct-acting principle must be used;